Marcus Aurelius Root, 1856, Panorama of Philadelphia. Chestnut Street, East of Fifth - Collins and Autenrieth (Artists), Lithograph, Archives of Modern Conflict OR National Gallery of Canada, LL/15028

Samuel Broadbent, 1856, Panorama of Philadelphia. Chestnut Street, East of Fifth (Detail showing the Daguerreotype Gallery of Broadbent) - Collins and Autenrieth (Artists), Lithograph, Archives of Modern Conflict OR National Gallery of Canada, LL/15029

Samuel Broadbent, 1856, Panorama of Philadelphia. Chestnut Street, East of Fifth (Detail showing the Daguerreotype Gallery of Broadbent) - Collins and Autenrieth (Artists), Lithograph, Archives of Modern Conflict OR National Gallery of Canada, LL/15030

Marcus Aurelius Root, 1856, Panorama of Philadelphia. Chestnut Street, East of Fifth (Detail showing the Daguerreotype Gallery of M.A, Root) - Collins and Autenrieth (Artists), Lithograph, Archives of Modern Conflict OR National Gallery of Canada, LL/15031

Nadar, 1860, Studio of Nadar at 35 Boulevard des Capucines, Paris, Albumen print, Creative Commons - Wikipedia, LL/35768

Nadar, 1860, Studio of Nadar at 35 Boulevard des Capucines, Paris (detail), Albumen print, Creative Commons - Wikipedia, LL/35769

William A. Pratt (Richmond, VA), 1851, Mr. Pratt's Gallery at Richmond, VA - Coloring Daguerreotypes, Magazine page, Google Books, LL/35165

James M. Ford, 1854-1857 (ca), Exterior view of Ford's Daguerrean Gallery, 202 and 203 Clay Street, San Francisco, Archives of Modern Conflict OR National Gallery of Canada, LL/9851

Unidentified photographer, n.d., Street view showing a sign for the Skylight Daguerrean Rooms, Albumen print, Archives of Modern Conflict OR National Gallery of Canada, LL/9801

Unidentified photographer, n.d., Street view showing a sign for the Skylight Daguerrean Rooms (Detail), Albumen print, Archives of Modern Conflict OR National Gallery of Canada, LL/9802

Unidentified photographer, n.d., Exterior view of Crocker's Ambrotype Rooms, Albumen print, Archives of Modern Conflict OR National Gallery of Canada, LL/9803

Unidentified photographer, n.d., Exterior view of Crocker's Ambrotype Rooms (Detail), Albumen print, Archives of Modern Conflict OR National Gallery of Canada, LL/9804

O.B. Silver, 1861 (ca), O.B. Silver's Ambrotype Gallery, Ambrotype, 1/2 plate, California State Library, LL/38269

Marcus Aurelius Root, 1866, Root Gallery, Daguerreotype studio, Albumen print, Historical Society of Pennsylvania, LL/44540

Marcus Aurelius Root, 1866, Root Gallery, Daguerreotype studio (detail), Albumen print, Historical Society of Pennsylvania, LL/44541

Marcus Aurelius Root, 1866, Root Gallery, Daguerreotype studio (detail), Albumen print, Historical Society of Pennsylvania, LL/44542

Marcus Aurelius Root, 1866, Root Gallery, Daguerreotype studio (detail), Albumen print, Historical Society of Pennsylvania, LL/44543

Marcus Aurelius Root, 1866, Root Gallery, Daguerreotype studio (detail), Albumen print, Historical Society of Pennsylvania, LL/44544

J. Thurlow, n.d., No. 85 Cameron's Cone - Cloud Effect (Detail), [Manitou and Vicinity], Stereocard, Jefferson Stereoptics, LL/11728

G.A. Flach, 1880 (ca) - 1950s (print), Flach's Photo Studio, Gelatin silver print, Carl Mautz Vintage Photographs, LL/11992

J.J. Reilly, n.d., #150 Montgomery Street from Clay Street, Stereoview, Jefferson Stereoptics, LL/13798

William Shew, n.d., Untitled image showing the exterior of Shew's establishment, with a man and two ladies seen in a window, possibly, or perhaps, Shew with wife and daughter., Stereocard, Jefferson Stereoptics, LL/15893

William Shew, n.d., Untitled image showing the exterior of Shew's establishment, with a man and two ladies seen in a window, possibly, or perhaps, Shew with wife and daughter., Stereocard, detail, Jefferson Stereoptics, LL/15894

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

Negretti & Zambra, 1885-1886 (ca), Frontispiece for "Negretti & Zambra's encyclopaedic illustrated and descriptive reference catalogue of optical, mathematical, physical, photographic, and standard meteorological instruments, manufactured and sold by them. Revised edition" (London), Frontispiece, Stockholms Auktionsverk, LL/43530

Negretti & Zambra, 1885-1886 (ca), Negretti & Zambra - 45, Cornhill [London], Frontispiece, detail, Stockholms Auktionsverk, LL/43532

Negretti & Zambra, 1885-1886 (ca), Negretti & Zambra - Holborn Viaduct [London], Frontispiece, detail, Stockholms Auktionsverk, LL/43533

Negretti & Zambra, 1885-1886 (ca), Negretti & Zambra - 122 Regent Street [London], Frontispiece, detail, Stockholms Auktionsverk, LL/43534

T.J. Trapp, n.d., T.J. Trapp's Photograph Gallery, Stereoview, Jeffrey Kraus Antique Photographics, LL/37813

T.J. Trapp, n.d., T.J. Trapp's Photograph Gallery, Stereoview, detail, Jeffrey Kraus Antique Photographics, LL/37814

Peabody & Weed (Yorkville, Ill.), 1860s (ca), Exterior of the studio of Peabody & Weed, Yorkville, Ill., Carte de visite, Private collection of Laddy Kite, LL/35888

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

Unidentified photographer / artist, 1860s (ca), Exterior of a Photographic Shack, Carte de visite, Private collection of Laddy Kite, LL/35890

Wm. McIntyre (Lexington, MI), 1860s (ca), Exterior of the propped up photographic building of Wm. McIntyre, Lexington, MI., Carte de visite, Private collection of Laddy Kite, LL/35891

Unidentified photographer, 1860s-1870s, A photographic studio on wheels, with a tripod mounted camera and a photographic van, Carte de visite, Private collection of Dan Weinstock, LL/39422

R. Fitzpatrick, 1860s (ca), Exterior of R. Fitzpatrick's Photograph Rooms, Carte de visite, Private collection of Laddy Kite, LL/35892

R. Fitzpatrick, 1860s (ca), Exterior of R. Fitzpatrick's Photograph Rooms, Carte de visite, detail, Private collection of Laddy Kite, LL/35893

Unidentified photographer / artist, n.d., "Entrance to Gallery," over door., Stereoview, Jeffrey Kraus Antique Photographics, LL/37808

Unidentified photographer / artist, n.d., "Entrance to Gallery," over door., Stereoview, detail, Jeffrey Kraus Antique Photographics, LL/37809

George Schuwirth (Austin, Texas), 1882 (ca), Untitled [George Schuwirth photography gallery, Austin, Texas], Cabinet card, detail, DeGolyer Library, South Methodist University - SMU, LL/38161

George K. Miller (Cooper, Texas), 1910 (ca), Untitled [Miller Picture Taker, photography studio], Cabinet card, detail, DeGolyer Library, South Methodist University - SMU, LL/38160

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

Unidentified photographer / artist, 1880 (ca), The exterior of a photographic studio in Genoa, Italy, Stereocard, Private collection of Adriano Silingardi, LL/36520

Unidentified photographer / artist, 1880 (ca), The exterior of a photographic studio in Genoa, Italy, Stereocard, detail - right, Private collection of Adriano Silingardi, LL/36521

Unidentified photographer / artist, 1880 (ca), The exterior of a photographic studio in Genoa, Italy, Stereocard, detail - right, Private collection of Adriano Silingardi, LL/36522

Hugo Schön (Munich), 1890 (ca), The gallery and studio of Hugo Schön, Marianplatz No.26, Munich, Cabinet card, back, Private collection of T. Max Hochstetler, LL/34690

Hugo Schön (Munich), 1890 (ca), The gallery and studio of Hugo Schön, Marianplatz No.26, Munich, Cabinet card, back, detail, Private collection of T. Max Hochstetler, LL/34691

1854, Lawrence's Gallery, 381 Broadway, corner White Street, New York, Advert, Google Books, LL/34614

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

Jeremiah Gurney, 1854, J. Gurney's Premium Daguerreotype Gallery, (corner Leonard Street,) 349 Broadway, New York, Advert, Google Books, LL/34620

Unidentified photographer / artist, 1852 (ca), N.E. Sisson's Daguerreotype Establishment, Invoice design, Archives of Modern Conflict OR National Gallery of Canada, LL/9701

Unidentified photographer / artist, 1852 (ca), N.E. Sisson's Daguerreotype Establishment, Invoice, Archives of Modern Conflict OR National Gallery of Canada, LL/9702

Mathew B. Brady, n.d., Exterior view of Brady's Gallery, Archives of Modern Conflict OR National Gallery of Canada, LL/9918

Clark, n.d., [USA], Carte de visite, back, Antiq-Photo, LL/9386

Appleton & Co, n.d., [England], Carte de visite, back, Antiq-Photo, LL/9387

M. Wacker (Aschaffenburg, Bavaria, Germany), n.d., The studio of M. Wacker, Carte de visite, back, Private collection of Ken Burkhart, LL/42540

Prentice and Vail, n.d., [USA], Carte de visite, back, Antiq-Photo, LL/9413

Prentice and Vail, n.d., [USA], Carte de visite, back, Antiq-Photo, LL/9414

Mr & Mrs Ward, n.d., [England], Carte de visite, back, Antiq-Photo, LL/9415

F.B. Clench, n.d., [USA], Carte de visite, back, Antiq-Photo, LL/9388

Gregor Baldi, n.d., Carte de visite back showing the studio of Baldi, Saltzburg, Carte de visite, back, Private collection of Fr. Gregor, LL/43890

R. Heinrich (Troppau), n.d., The studio of R. Heinrich, Johannisgasse 9 Eck Schillerpark 1, Troppau, Carte de visite, back, Private collection of Fr. Gregor, LL/54053

Atelier [A.] Gossauer (Rapperswyl, Switzerland), n.d., Backmark for Atelier Gossauer, Rapperswyl, Obere Bahnhofstrasse, Cabinet card, back, Private collection of Bill Jones, LL/59583

G.F. Gale, n.d., Untitled, Cabinet card, back, Antiq-Photo, LL/9416

Baker's Art Gallery, n.d., Untitled, Cabinet card, back, Antiq-Photo, LL/9417

Baker's Art Gallery, n.d., [Detail], Cabinet card, back, Antiq-Photo, LL/9418

Eskil's Art Gallery, n.d., Untitled, Cabinet card, back, Antiq-Photo, LL/9419

L.M. Melander, n.d., Melander, Photographer, 208 Ohio St., Cor. Clark, Chicago, Cabinet card, back, Private collection of Ken Burkhart, LL/42544

Louis A. Rudolph, n.d., Untitled, Cabinet card, back, Antiq-Photo, LL/9424

J.J. Wixson's and Son, n.d., Untitled, Cabinet card, back, Antiq-Photo, LL/9426

Briggs & Co. (Ottumwa, Iowa), 1880 (ca), Backmark for "Briggs & Co., Photographers, The Ground Floor Studio, 311 E. Main St., Ottumwa, Iowa", Cabinet card, back, Antiq-Photo, LL/9428

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, LL/9429

Jacob Berg, n.d., Untitled, Cabinet card, back, Antiq-Photo, LL/9420

Steffens Atelier (Chicago, Illinois), n.d., The Steffens Atelier, Cabinet card, back, Private collection of Ken Burkhart, LL/42541

James M. White, 1892, J.M. White & Co, Photographers, 1102 Military Street, Port Huron, Mich., Cabinet card, back, Private collection of Ken Burkhart, LL/42545

Ye Rose Studio, n.d., Untitled, Cabinet card, back, Antiq-Photo, LL/9421

Prof. Ehrlich, n.d., Prof. Ehrlich's Photograph Gallery, No.160 East 66th Street. Bet. Lexington & 3rd Ave, New York, Cabinet card, back, Private collection of Ken Burkhart, LL/42543

Prof. Ehrlich, n.d., Prof. Ehrlich's Photograph Gallery, No.160 East 66th Street. Bet. Lexington & 3rd Ave, New York, Cabinet card, back, detail, Private collection of Ken Burkhart, LL/42542

Weston (Bangor, Maine), n.d., Cabinet card back showing exterior of studio for Weston (Bangor, Maine), Cabinet card, back, Private collection of Laurie Minor, LL/31555

Weston (Bangor, Maine), n.d., Cabinet card back showing exterior of studio for Weston (Bangor, Maine), Cabinet card, back, detail, Private collection of Laurie Minor, LL/31556

Weston (Bangor, Maine), n.d., Cabinet card back showing exterior of studio for Weston (Bangor, Maine), Cabinet card, back, detail, Private collection of Laurie Minor, LL/31558

Heinemann (Chicago, Illinois), n.d., Heinemann, Photographer - with exterior and interior of the studio, Cabinet card, back, Private collection of Ken Burkhart, LL/42546

Heinemann (Chicago, Illinois), n.d., Heinemann, Photographer - Studio exterior, Cabinet card, back, detail, Private collection of Ken Burkhart, LL/42547

Sigrid Wagman Studio (Upsala), n.d., Carte de visite with exterior of Sigrid Wagman Studio, Upsala, Carte de visite, back, Private collection of Liese A. Ricketts, LL/31565

Sigrid Wagman Studio (Upsala), n.d., Carte de visite with exterior of Sigrid Wagman Studio, Upsala, Carte de visite, back, detail, Private collection of Liese A. Ricketts, LL/31566

Edward F. Hartley, n.d., Design showing the store of Hartley, 309 Madison Ave., Chicago, Cabinet card, back, Private collection of Michael Pecosky, LL/54085

Edward F. Hartley, n.d., Design showing the store of Hartley, 309 W. Madison Ave., Chicago, Cabinet card, back, Private collection of Michael Pecosky, LL/54086

Carleton E. Watkins, n.d., View from Glacier Point [Yosemite] (reverse), Albumen print, boudoir mount, back, Larry Gottheim, Be-hold, Inc, LL/31019

Dr. J.C. Mills, n.d., Backmark for Dr. Mills, Photographer, Penn Yan, N.Y., Cabinet card, back, Private collection of Jim Cantwell, LL/23948

A. Denis & Cie. (St. Hyacinthe), n.d., Advertising for A. Denis & Cie., St. Hyacinthe., Tintype, carte de visite mount, Private collection of Laurie Minor, LL/31393

W.H. Pearce, n.d., The Forest Home Bon Ton Tent, Tintype folder, Private collection of Ken Burkhart, LL/42539

1859, 21 October, An isometrical drawing of a small glass room, Magazine illustration, Google Books, LL/34540

1859, 21 October, A glass room, Magazine illustration, Google Books, LL/34541

Unidentified photographer / artist, 1884, Glass-roofed studio, Book illustration, Google Books, LL/34848

Unidentified photographer / artist, 1884, Glass-roofed studio, Book illustration, Google Books, LL/34849

Unidentified photographer / artist, 1888, 23 March, "To make it more agreeable under the skylight" by Rudolph Goebel, Magazine page, Google Books, LL/34491

Unidentified photographer, 1859, [Ordnance Survey Building, Southampton], [The Report of the Committee on the Reduction of Ordnance Plans by Photography], Albumen print, Library of Congress, Geography and Maps Division, LL/44773

1860, 18 May, Perspective view of the Photographic Building constructed by the Ordnance Survey Department, at Southampton, designed by Colonel James, R.E., Magazine illustration, Google Books, LL/34546