Samuel Broadbent, 1856, Panorama of Philadelphia. Chestnut Street, East of Fifth (Detail showing the Daguerreotype Gallery of Broadbent) - Collins and Autenrieth (Artists), Lithograph, 6 3/4 x 10 1/4 in (complete lithograph), Archives of Modern Conflict OR National Gallery of Canada, Courtesy of Nick and Lynn Heckett, LL/15029

Mayall & Co, 1870-1875, Exterior view of the premises of Mayall & Co., Albumen print, Private collection of Lisa Tao, LL/18478

O.B. Silver, 1861 (ca), O.B. Silver's Ambrotype Gallery, Ambrotype, 1/2 plate, California State Library, Record no: 001379275, LL/38269

Morse, 1860s (ca), Morse's Photographs - Tent in use, Carte de visite, Private collection of Laddy Kite, LL/35885

H. Gurlitz, 1860s (ca), Harry Gurlitz's Photograph Gallery, Carte de visite, Private collection of Laddy Kite, LL/35887

McLeon's, W.A. Mooers, operator (operator. 34 Charlotte St., St. John, New Brunswick), n.d., Photograph Saloon on raft, Carte de visite, Rare Photo Gallery - Neil David MacDonald, LL/35996

Unidentified photographer / artist, 1860s (ca), Exterior of a Photographic Gallery, Carte de visite, Private collection of Laddy Kite, LL/35889

W.P. Floyd, 1869 (ca), Queens Road, Hongkong, Albumen print, 24.8 x 19 cm, Tonpeek Photography, LL/39188

Thomas Easterly, 1870, Fourth Street North from Olive, Bell's Gallery, Daguerreotype, Missouri Historical Society, Courtesy of the Missouri History Museum, Thomas Easterly Collection N17001., LL/36389

Unidentified photographer / artist, 1860s, Great Malvern, England, Stereocard, Early Image: 19th & Early 20th Century Photographs, Courtesy of Josh Wiesner - The Early Image, LL/14211

Unidentified photographer / artist, 1860s, Great Malvern, England (Detail), Stereocard, Early Image: 19th & Early 20th Century Photographs, Courtesy of Josh Wiesner - The Early Image, LL/14212

Unidentified photographer / artist, n.d., Chase's Daguerreotype Rooms, Broadside, Archives of Modern Conflict OR National Gallery of Canada, LL/9639

Chase's Daguerreotype Rooms (Boston), n.d., Chase's Dauerreotype Rooms, 257 Washington Street, Boston, Archives of Modern Conflict OR National Gallery of Canada, LL/9892

E.S. Hayden, 1850 (ca), Advertisement for E.S. Hayden's Daguerreotype Miniatures, Advert, Archive Farms, LL/38866

C.V. Allen, n.d., Card for C.V. Allen & Co. [Boston], Daguerreotype label, Larry Gottheim, Be-hold, Inc, Courtesy of Larry Gottheim - Be-Hold (46 / 21), LL/8849

Marcus Aurelius Root, 1850 (ca), John Chambers Rankin & Sarah Trimball Comfort, Daguerreotype, cased, Private collection of Ken Burkhart, LL/42555

Marcus Aurelius Root, 1850 (ca), Address for "Root's Gallery 140 Chestnut St. Philada.", Daguerreotype case, red velvet, Private collection of Ken Burkhart, LL/42556

Gustave Le Gray, 1858 (ca), Gustave Le Gray - Business Card, Business card, 2.7 x3.9 ins, Archive Farms, LL/38875

Adrien Tournachon, 1857 (ca), Adrien Tournachon - Business Card, Business card, 2.7 x3.9 ins, Archive Farms, LL/38876

1840, Instructions in the Daguerreotype - Mr. Seager, Advert, Google Books, LL/34801

n.d., Advertisement for L.H. Griffin's Ambrotype and Photograph Rooms, 268 Washington St. Boston., Advert, Archives of Modern Conflict OR National Gallery of Canada, LL/9842

Parker's Photographic Rooms (Pekin, ILL), 1865, 7 March (after, date of Potter's Patent), Advertising for Parker‘s Photographic Rooms,Pekin, ILL., Tintype, carte de visite mount, Private collection of Laurie Minor, LL/31395

Schoonmaker & Hill, n.d., Tintype advertising showing a man astride a large format camera which appears to have legs of a horse, Tintype, carte de visite mount, Private collection of Laurie Minor, LL/31398

J.H. Abbott, n.d., Advertising image for "J.H. Abbott Photographer 480 Broadway Albany N.Y.", Tintype, back, detail, Private collection of Ken Burkhart, LL/42538

Myles Garner, 1887, 1 June, Advertisement for Myles Garner, photographer, Advert, British Library, Courtesy of the British Library, Item number: 6489, Shelfmark: Evan.6489, LL/37234

William Bailey, 1889, Advertisement for William Bailey, photographer, Advert, British Library, Courtesy of the British Library, Item number: 6475, Shelfmark: Evan.6475, LL/37235

F. Brookes, 1891, Advertisement for F. Brookes, artist and photographer, Advert, British Library, Courtesy of the British Library, Item number: 6628, Shelfmark: Evan.6628, LL/37236

W. Mountain, 1884, Advertisement for W. Mountain's Royal Academy Studios, Advert, British Library, Courtesy of the British Library, Item number: 6482, Shelfmark: Evan.6482, LL/37237

Maurice Palmer, 1870, Advertisement for Maurice Palmer, photographer, Advert, British Library, Courtesy of the British Library, Item number: 9034, Shelfmark: Evan.9034, LL/37238

Albert Flint, 1887, Advertisement for Albert Flint, photographic artist, Advert, British Library, Courtesy of the British Library, Item number: 6905, Shelfmark: Evan.6905, LL/37239

Plimpton & Ruggles, 1866, Plimpton and Ruggles, successors to Geo. W. Miller, Photographist, Advert, Google Books, LL/34941

C. Cole (Roxbury), 1866, C. Cole, Photograph Artist, Advert, Google Books, LL/34942

1854, December, Advert for Daguerreotypes, Advert, Google Books, LL/34626

Mrs. J.R. Spooner, 1845, 11 January, Mrs J.R. Spooner begs to announce…, Advert, Google Books, LL/36144

E. Jacobs (New Orleans), 1851, Daguerreotypists. E. Jacobs, Book page, Google Books, LL/36159

James Wallace Black, 1862, J.W. Black, Photographist, Advert, Google Books, LL/36170

Martin M. Lawrence, 1854, December, Lawrence, Advert, Google Books, LL/34630

1856, Farmer's Photographic Portraits, Brighton, Advert, Google Books, LL/35359

Platt D. Babbitt, n.d., Advert for Platt D. Babbitt, Advert, Private collection of Richard O. Titus, LL/42925

Jeremiah Gurney, 1854, J. Gurney's Premium Daguerreotype Gallery, (corner Leonard Street,) 349 Broadway, New York, Advert, Google Books, LL/34618

Jeremiah Gurney, 1854, J. Gurney's Premium Daguerreotype Gallery, (corner Leonard Street,) 349 Broadway, New York, Advert, Google Books, LL/34619

1866, E. & H.T. Anthony & Co., New York, Advert, Google Books, LL/34601

Oscar Gustave Rejlander, 1869, 18 June, Mr. Rejlander's New Studio, Magazine illustration, Google Books, LL/34594

1889, Germany, Romain Talbot, Berlin, Advert, Google Books, LL/35552

J.C. Moulton, 1860s (ca), A bird delivers the card of J.C. Moulton, Photographic Artist, 368 Main Street, Fitchburg, Mass., Carte de visite, Private collection of Laddy Kite, LL/35877

A.H. Hemple, n.d., A.H. Hemple (Advertising CDV), Carte de visite, Larry Gottheim, Be-hold, Inc, Courtesy of Larry Gottheim - Be-Hold (45 / 55), LL/10897

Mathew B. Brady, 1854, A New Feature in Daguerreotypes has been introduced by Brady, at his Old Gallery, 205 Broadway, cor. Of Fulton St. N.Y., Advert, Google Books, LL/34625

Mathew B. Brady, 1854, Brady's New and Magnificent Daguerreotype Gallery, 359 Broadway, New York, Advert, Google Books, LL/34623

Mathew B. Brady, 1854, Brady's Daguerrian Galleries, 359 & 205 Broadway, New York, Advert, Google Books, LL/34616

John Thomson, 1873-1874 (Published), A Hong-Kong Artist, Book illustration, Yale University, Beinecke Rare Book and Manuscript Library, LL/40150

I.W. Taber, 1881, Photographic studios of San Francisco, Book page, Google Books, LL/40642

Baker's Art Gallery, n.d., [Detail], Cabinet card, back, Antiq-Photo, Courtesy of Anthony Davis - Antiq-photo / Rainbow creations (www.19cPhoto.com), LL/9418

Louis A. Rudolph, n.d., Untitled, Cabinet card, back, Antiq-Photo, Courtesy of Anthony Davis - Antiq-photo / Rainbow creations (www.19cPhoto.com), LL/9424

Briggs & Co. (Ottumwa, Iowa), n.d., Backmark for "Briggs & Co., Photographers, The Ground Floor Studio, 311 E. Main St., Ottumwa, Iowa", Cabinet card, back, detail, Antiq-Photo, Courtesy of Anthony Davis - Antiq-photo / Rainbow creations (www.19cPhoto.com), LL/9429

Frances Benjamin Johnston, 1903, May, Frances Benjamin Johnston selling tintypes at a Virginia country fair, Gelatin silver print, Library of Congress, Prints and Photographs Division, Reproduction Number: LC-J713-4931, LL/37192

Mathew B. Brady, 1854 (ca), [Brady's Daguerrean Gallery], Daguerreotype, 1/2 plate, Library of Congress, Prints and Photographs Division, DAG no. 030, LC-USZ62-109858 DLC (b&w film copy neg. post-1992), LL/33477

F.M. Yeager, 1860s (ca), Interior of F.M. Yeager's studio showing his properties, Carte de visite, Private collection of Laddy Kite, LL/35878

Jeremiah Gurney, 1854, Daguerrean Sketches in New York [Interior of J. Gurney's daguerreian gallery at 349 Broadway, New York], Engraving, Daguerreian Society, Courtesy of the Daguerreian Society (www.daguerre.org), LL/6764

Lewis H. Bissell, 1895 (ca), Photographer's Studio, Cabinet card, Carl Mautz Vintage Photographs, Courtesy of Carl Mautz, LL/11950

D. Appleton, 1858-1860 (ca), Untitled image inside the Appleton Store, showing customers, staff, views, viewers, signs advertising views and viewers., Stereocard, Jefferson Stereoptics, Courtesy of John Saddy (Auction, Tue, Dec 12, 2006 & Thu, Dec 14, 2006, # 06-4, Lot 364), LL/15898

D. Appleton, 1858-1860 (ca), Untitled image inside the Appleton Store, showing customers, staff, views, viewers, signs advertising views and viewers., Stereocard, detail, Jefferson Stereoptics, Courtesy of John Saddy (Auction, Tue, Dec 12, 2006 & Thu, Dec 14, 2006, # 06-4, Lot 364), LL/15899

F. Jay Haynes, 1886, The interior of the Haynes Palace Studio Car at Helena (M/T.), Uncertain format, Creative Commons - Wikipedia, LL/36180

F. Jay Haynes, 1896, Salesroom, F. Jay Haynes, Mammoth Hotel, Yellowstone National Park, Photographic print, 5 x 7 ins, The Pioneer Museum - Gallatin Historical Society, Courtesy of the Pioneer Museum of Bozeman, photograph donated by Patricia Purdy Hillman. Photograph #10788., LL/36192

Thomas Houseworth, n.d., Page 29. Houseworth's illustrated catalogue of celebrities, 121 Montgomery Street, San Francisco, Cal., Photographic copy print, 16.5 x 11.2 cm, Yale University, Beinecke Rare Book and Manuscript Library, Yale Collection of Western Americana, Beinecke Rare Book and Manuscript Library, Call Number: Uncat WA MSS 429, Image ID Number: 1078684, LL/38211

London Stereoscopic Company, 1856, Christmas and Winter Evening's Enjoyment. Amusement and Instruction for All !, 24 page catalogue, Catalogue, Stereographica - Antique Photographica, Courtesy of Bryan and Page Ginns (#23 / 222), LL/42965

Lawrence & Houseworth, 1866, Book cover for "Gems of California Scenery. Catalogue of Views Photographed and Published by Lawrence & Houseworth, Opticians, 317 & 319 Montogomery Street, San Francisco", Third edition (1866), Book cover, Library of Congress, Prints and Photographs Division, Lawrence & Houseworth Collection, LC-USZ62-133179, LL/36189

Giacomo Brogi, 1881, Catalogue of the photographs of Giacomo Brogi (Firenze), Catalogue cover, Archive Farms, LL/38868

Soule Photograph Company, 1887, January, "Catalogue of Photographic Reproductions of Works of Art. Published by the Soule Photograph Company.", January, 1887, 50th Thousand, Tenth Edition, (Boston, Mass.), Catalogue cover, Google Books, LL/39525

The Yamabe Photo Co. (Yokohama, Japan), 1890 (ca), Price list of the Leading Photographers, The Yamabe Photo Co., Albumen print, octagonal format, Christopher Wahren Fine Photographs, LL/39537

The Yamabe Photo Co. (Yokohama, Japan), 1890 (ca), Price list of the Leading Photographers, The Yamabe Photo Co., Albumen print, octagonal format, Christopher Wahren Fine Photographs, LL/39538

Alfredo Noack, n.d., Photograph album "Ricordo del Campo Santo - Genova", Alfredo Noack, Genova, Album cover, 12 x 17 cm (album), Private collection of Christoph Laubsch, LL/41248

Schleaers Gallery (Knoxville, Tenn.), 1860s (ca), Photo still life with a pyramid of carte de visite albums, Carte de visite, trimmed, detail, Private collection of Laddy Kite, LL/35880

Xavier Merieux, 1865, Photographic trade card, Albumen print, 8.8 x 5.7 cm, George Eastman Museum, Gift of Eastman Kodak Company: ex-collection Gabriel Cromer (GEH NEGS: 26036 10164, 80:0474:0001), LL/6986

Wilson, Hood & Co., 1860s (ca), Photographic paraphenalia, Carte de visite, Private collection of Laddy Kite, LL/35882

Gustave Cousin (Paris), 1870 (ca), Props in a 19th century Parisian photography studio, Albumen print, Private collection of Jan Weijers (Servatius), LL/38872

Orvis, 1860s (ca), A photographer, presumably J.R. Orvis, with his camera, props and photographic paraphenalia, Carte de visite, Private collection of Laddy Kite, LL/35895

O.W. Horton, n.d., O.W. Horton emptying his scrap bag of photographs, Carte de visite, Private collection of Erin Waters, LL/34284

Abraham Bogardus, n.d., Keep this as your guide to get fine Photographs, Cabinet card (?), small, composite, 3 1/4 x 5 in (approx), Private collection of Laurie Minor, LL/31317

Unidentified photographer / artist, n.d., Whimsical, creative advertising photograph which reads, Stolen from Franks', Peoria City Directory, Cabinet card, trimmed, 3 3/4 x 5 3/8 in, Capitol Gallery, Courtesy of Capitol Gallery (Spring 2007 Auction, #79), LL/17793

Émile Gsell, 1860s, [Photographic Advertisement], Albumen silver print, from glass negative, 23.5 x 31.8 cm (9 1/4 x 12 1/2 ins), Metropolitan Museum of Art, Gilman Collection, Purchase, Cynthia Hazen Polsky Gift, 2005, Accession Number: 2005.100.497, LL/40406

J.H. Emerson, n.d., Daguerrean banknote, Emerson‘s Photographic & Daguerrean Palace, 81 Main Street, Keokuk, Iowa, Banknote, Private collection of Allan Janus, LL/32279

J.H. Emerson, n.d., Daguerrean banknote, Emerson‘s Photographic & Daguerrean Palace, 81 Main Street, Keokuk, Iowa (detail), Banknote, detail, Private collection of Allan Janus, LL/32280

Eugène Constant, 1852 (ca), Stamp for Eugène Constant, Studio stamp, Studios Robespierre, Serge Plantureux, courtesy Choppin De Janvry (May 30, 2007, #80), LL/19690

Emilie Bieber, 1852-1860 (ca), Daguerreotype label for the Emilie Bieber studio in Hamburg, Studio label, Private collection of Klaus Niermann, LL/21349

Carlo Baldassare Simelli, n.d., Studio label for Simelli, Studio label, Private collection of Katherine Babin, LL/29417

G. Lékégian, 1880 (ca), Studio label for G. Lekegian on negative, Studio mark on negative, Private Collection of Robert G. Hill, Toronto, Ont., www.hillcollection.com - Acc: 698, LL/30664

Luis Leon Masson, 1860 (ca), Studio stamp for Luis Leon Masson, Studio stamp, Private Collection of Robert G. Hill, Toronto, Ont., www.hillcollection.com - Acc: 982, LL/30839

John Plumbe Jr., 1850 (ca), Plumbe National Daguerreian Gallery, No. 75 Court Street [Boston], Label on back of a Daguerreotype, 2 in x 2.5 in, Archive Farms, LL/38865

L. Leblanc, n.d., Label for "Portraits Daguerriens et Photographie sur Papier Perfectionnés par L. LeBlanc. Reproduction de Tableaux, Dessins, Gravures, Objets d'Art &c. No.1 Boulevard des Italiens et rue Richelieu, 115. Maison de la Petite Jeanette", Daguerreotype, back, 23 x 19 cm, Dordrechts Museum, www.daguerreobase.org - Daguerreobase no: DMU07, LL/41452

Alexandre Bertrand, n.d., Portrait of a standing woman holding a folio book, Daguerreotype, stereo, back label, Christopher Wahren Fine Photographs, Courtesy of Christopher Wahren, LL/15611

Mr and Mme Guyard (Paris), 1845 (ca), Label for M. et Mme. Guyard - Artistes Peintre de Paris, Printed label, Universiteit Leiden, Prentenkabinet, www.daguerreobase.org - Daguerreobase no: PKL-65.0857, LL/41471

Blandin (Reims), 1855, Label for Blandin, Rue Large, 18., Label on reverse of Daguerreotype, 13.6 x 16 cm, Collectie Driesen, www.daguerreobase.org - Daguerreobase no: DRI-2004-09-001, LL/41499

A. Daru, 1842 (or later), Printed back of a Daguerreotype "Portraits au Daguerreotype, en un minute, par A. Daru de Paris", Prnted back, 15.3 x 12.7 cm, Museum Enschedé, www.daguerreobase.org - Daguerreobase no: ME29, LL/41502

Désiré François Millet, n.d., Stereo daguerreotype of French soldier, Daguerreotype, stereo, back label, Christopher Wahren Fine Photographs, Courtesy of Christopher Wahren, LL/15605

Francis Bedford, 1862 (ca), Signature of F. Bedford on negative, Signature on negative, Private Collection of Robert G. Hill, Toronto, Ont., www.hillcollection.com - Acc: 878, LL/30668

Pascal Sebah, 1870 (ca), Signature of Pascal Sebah on the negative, Signature on negative, Private Collection of Robert G. Hill, Toronto, Ont., www.hillcollection.com - Acc: 207, LL/30658

Bisson frères, 1850s (ca), Signature stamp for Bisson frères, Signature stamp, Lee Gallery, LL/13360

Samuel Bourne, 1865 (ca), Signature of Samuel Bourne with his number on the negative, Signature and number on negative, Private Collection of Robert G. Hill, Toronto, Ont., www.hillcollection.com - Acc: 256, LL/30657

William Henry Jackson, 1884-1900 (ca), Printed card back for "W.H. Jackson & Co., Photographers of Rocky Mountain Scenery Denver, Colorado", Studio details, printed, DeGolyer Library, South Methodist University - SMU, Southern Methodist University, Central University Libraries, DeGolyer Library, Call number: Ag1999.1255, LL/38146

G. Churchill, n.d., [England], Carte de visite, back, Antiq-Photo, Courtesy of Anthony Davis - Antiq-photo / Rainbow creations (www.19cPhoto.com), LL/9400

Oliver Sarony, 1863, 26 June (after), Advertising Carte de Visite by Sarony, Scarborough, England, Carte de visite, front, Stereographica - Antique Photographica, Courtesy of Bryan and Page Ginns (26 September 2009, #22 / 125), LL/34126

W. & D. Downey, 1867, September, Princess Alexandra with her daughter, Princess Louise, Carte de visite, Paul Frecker, LL/12019

Russell & Sons, n.d., Untitled, Cabinet card, back, Antiq-Photo, Courtesy of Anthony Davis - Antiq-photo / Rainbow creations (www.19cPhoto.com), LL/9441

Jean Baptiste Feilner, n.d., [Germany], Carte de visite, back, Antiq-Photo, Courtesy of Anthony Davis - Antiq-photo / Rainbow creations (www.19cPhoto.com), LL/9404

William Notman, n.d., [Detail], Cabinet card, back, Antiq-Photo, Courtesy of Anthony Davis - Antiq-photo / Rainbow creations (www.19cPhoto.com), LL/9435

S.L. Stein, n.d., Printed back showing awards., Cabinet card, back, Antiq-Photo, Courtesy of Anthony Davis - Antiq-photo / Rainbow creations (www.19cPhoto.com), LL/9444

Unidentified photographer / artist, 1867, 8 January, Mr. J.R. Goodin offered the following resolution, Book page, Google Books, LL/34937

J.F. Standiford, n.d., Untitled, Cabinet card, back, Antiq-Photo, Courtesy of Anthony Davis - Antiq-photo / Rainbow creations (www.19cPhoto.com), LL/9438

Clark, n.d., [USA], Carte de visite, back, Antiq-Photo, Courtesy of Anthony Davis - Antiq-photo / Rainbow creations (www.19cPhoto.com), LL/9386

Bradley & Rulofson, n.d., Backmark for ""Bradley & Rulofson" of San Francisco., Cabinet card, back, Antiq-Photo, Courtesy of Anthony Davis - Antiq-photo / Rainbow creations (www.19cPhoto.com), LL/9448

Hughes (London), n.d., Backmark for "Hughes - Day & Electric Light Studios", Cabinet card, back, Antiq-Photo, Courtesy of Anthony Davis - Antiq-photo / Rainbow creations (www.19cPhoto.com), LL/9454

Robert Bingham, 1862 (after), Reverse of a CDV for [Robert] Bingham, Carte de visite, back, Private collection of John Toohey, LL/32368

1876, Second-Hand Lenses, Cameras, and Apparatus by all the finest makers - W. Morley, London, Advert, Google Books, LL/35556

J.G. Vail, n.d., [USA], Carte de visite, back, Antiq-Photo, Courtesy of Anthony Davis - Antiq-photo / Rainbow creations (www.19cPhoto.com), LL/9391

Negretti & Zambra, 1853 (or later), Negretti & Zambra Photographer booth, Stereocard, Stereoviews: Stereoviews and Fine 19th & 20th Century Antique Photographs, Courtesy of David Spahr (www.stereoviews.com), LL/11636

Negretti & Zambra, 1853 (or later), Negretti & Zambra Photographer booth (Detail), Stereocard, Stereoviews: Stereoviews and Fine 19th & 20th Century Antique Photographs, Courtesy of David Spahr (www.stereoviews.com), LL/11637

T.T. Sweeney, 1870, Exhibition of the National Photographic Association, 1870, Albumen print, 7.5 x 5 in (image) 9.25 x 6 in (mount), Stereographica - Antique Photographica, Courtesy of Bryan and Page Ginns (#20 / 215), LL/31531

Unidentified photographer / artist, 1876, Photographic Hall of the International Centennial Exhibition of 1876, Philadelphia, Albumen print, 7.75 x 4.75 in (image) 9.25 x 6 in (mount), Stereographica - Antique Photographica, Courtesy of Bryan and Page Ginns (#20 / 216), LL/31532

London Stereoscopic Company, 1862, No. 54 - The French Photographic Gallery, Stereocard, half, Archives of Modern Conflict OR National Gallery of Canada, Accession number: 2017.0017, LL/23510

Charles Thurston Thompson, 1858, Exhibition of the Photographic Society of London and the Société Française de photographie at the South Kensington Museum, Albumen print, Victoria and Albert Museum, Museum no. 2715-1913, LL/33791

Charles Thurston Thompson, 1858, Exhibition of the Photographic Society of London and the Société Française de photographie at the South Kensington Museum - Fenton's 'Head of Homer' situated in the 1858 Exhibition (close-up), Albumen print, detail, Victoria and Albert Museum, Museum no. 2715-1913, LL/33793

Roger Fenton, 1855 (ca), Head of Homer, Salted paper print, Victoria and Albert Museum, Museum no. 40:810, LL/33794

Centennial Photographic Co., 1876?, Group-Centennial Photographic Co.'s employees, Albumen print, 44 x 54 cm, Free Library of Philadelphia, Collection: Centennial Exhibition, Item No: c042471, LL/41300

Centennial Photographic Co., 1876?, Trapp & Munch's exhibit-Photographic Hall, Albumen print, 21 x 26 cm, Free Library of Philadelphia, Collection: Centennial Exhibition, Item No: c021233, LL/41299

Centennial Photographic Co., 1876?, F. Gutekunst's exhibit - Photographic Hall, Stereoview, 11 x 18 cm, Free Library of Philadelphia, Collection: Centennial Exhibition, Item No: c061420, LL/41303

Centennial Photographic Co., 1876?, Wilson, Hood & Co.'s exhibit - Photographic Hall, Stereoview, 11 x 18 cm, Free Library of Philadelphia, Collection: Centennial Exhibition, Item No: c061934, LL/41304

Unidentified photographer, 1889 (ca), The Eastman Dry Plate and Film Company stand at a trade fair, Kodak circular snapshot print, National Science and Media Museum, Ref Number: 1990-5036/6004/6, LL/42470

Unidentified photographer / artist, 1890s (ca), An English Camera Club outing, Albumen print, 5.25 x 8.25 in, Stereographica - Antique Photographica, Courtesy of Bryan and Page Ginns (#20 / 214), LL/31530

Frances Benjamin Johnston, 1890 (ca), Frances Benjamin Johnston and Washington Camera Club looking at pictures, Photographic print, Library of Congress, Prints and Photographs Division, Reproduction Number: LC-USZ62-83118 (b&w film copy neg.), LL/37119

Frances Benjamin Johnston, 1900, International Congress of Photography, Paris, Photographic print, Library of Congress, Prints and Photographs Division, Reproduction Number: LC-USZ62-83127 (b&w film copy neg.), LL/37122