1866, Southern Stock Depot, Baltimore, Advert, Google Books, LL/34600
1866, Tilford's St. Louis Photographic Stock Department, Advert, Google Books, LL/34596
1866, Tilford's St. Louis Photographic Stock Department, Advert, Google Books, LL/34597
Bland & Long (authors), 1856, Title page for "Illustrated Catalogue of Apparatus & Chemical Preartions used in the Art of Photography; Comprising the Daguerreotype, Calotypeà" (Bland & Long, Opticians, 1856), Title page, Google Books, LL/34640
1850, Philosophical and Chemical Apparatus - Horne, thornwaite and Wood, Opticians, 123 Newgate Street, London, Advert, Google Books, LL/34657
1859, Horne & thornwaite, Opticians, Advert, Google Books, LL/35343
1858, Advert for the Cincinnati Photographic Stock Depot, No.86, Fifth Street, Advert, Google Books, LL/34670
Unidentified photographer / artist, 1855, Kent's Chemical Laboratory, Book illustration, Google Books, LL/34647
1858, Advert for S.D. Humphrey, Photographic Chemist, Advert, Google Books, LL/34671
1858, Advert for S.D. Humphrey, Photographic Chemist, Advert, Google Books, LL/34672
1858, Advert for Hegan & Escott, 475 Main Street, Louisville, Ky., Advert, Google Books, LL/34674
1858, Advert for Garrigues & Magee, No.108, North Fifth Streey, above Arch, Philadelphia, Advert, Google Books, LL/34675
1861, 12 January, Wholesale List of Cheap Stereoscopes & Views, manufactured by D. Appleton & Co., Advert, Google Books, LL/34773
1856, C.E. Clifford - Photography Apparatus and Chemical Warehouse, Advert, Google Books, LL/35354
1864, Wholesale Photographic and Optical Warehouse. J. Solomon, Advert, Google Books, LL/34464
Unidentified photographer / artist, 1871, Supplement to the "Photographer's Friend: A Priced Catalogue of Photographic Requisites of Superior Excellence, Furnished by Richard Walzl, Baltimore, Md., Magazine page, detail, Google Books, LL/35809
Unidentified photographer / artist, 1871, Supplement to the "Photographer's Friend: A Priced Catalogue of Photographic Requisites of Superior Excellence, Furnished by Richard Walzl, Baltimore, Md.", Magazine page, detail, Google Books, LL/35810
Unidentified photographer / artist, 1871, Supplement to the "Photographer's Friend: A Priced Catalogue of Photographic Requisites of Superior Excellence, Furnished by Richard Walzl, Baltimore, Md.", Magazine page, detail, Google Books, LL/35811
1871, A Glance into the Future: or, the Wise and the Unwise, Advert, Google Books, LL/35815
1871, Office of the Photographer's Friend, R. Walzl, No.103 West Baltimore Street, Baltimore, MD., Advert, Google Books, LL/35822
1871, Office of the Photographer's Friend, R. Walzl, No.103 West Baltimore Street, Baltimore, MD., Advert, detail, Google Books, LL/35823
1871, Southern Headquarters, For Photographic Requisites - Richard Walzl, Advert, Google Books, LL/35816
Unidentified photographer / artist, n.d., Interior of Stereographic Manufactory (Back), Stereocard, Jefferson Stereoptics, LL/11730
Unidentified photographer / artist, n.d., Interior of Stereographic Manufactory, Stereocard, Jefferson Stereoptics, LL/11729
Unidentified photographer / artist, n.d., Interior of Stereographic Manufactory (Detail), Stereocard, Jefferson Stereoptics, LL/11731
1881, December, Carte Envelope. Martin & Wm. H. Nixon, Manufacturers, Advert, Google Books, LL/34469
Unidentified photographer / artist, 1853, The apparatus for the Daguerreotype, Book illustration, Google Books, LL/34653
Unidentified photographer / artist, n.d., Plate box for White's Plates, Box for Daguerreian plates, Larry Gottheim, Be-hold, Inc, LL/27067
Unidentified photographer / artist, n.d., Plate box for White's Plates, Box for Daguerreian plates, Larry Gottheim, Be-hold, Inc, LL/27068
1881, December, A.M. Collins, Son & Co., Manufacturers of Photographic Card Stock, Advert, Google Books, LL/34466
1878, A.M. Collins, Son & Co. Manufacturers of Photographic Card Stock, Advert, Google Books, LL/34489
1871, Advert for A.M. Collins, Son & Co., Philadelphia, Advert, Google Books, LL/34889
1884, Marion & Co.'s French Mounts, Advert, Google Books, LL/34500
1878, Exquisite Velvet Frames adapted for Photographic Miniatures, manufactured by E. & H.T. Anthony & Co., 591 Broadway, N.Y., Advert, Google Books, LL/34490
1881, Advert for Douglass, thompson & CO., Chicago, Advert, Google Books, LL/34899
1881, Advert for Lewis Pattberg & Bro.'s, Office: 709 Broadway, New York, Factory: Jersey City Heights, N.J., Advert, Google Books, LL/34900
1881, Advert for Seavey's Studio, Studio 8, Lafayette Place, New York, Advert, Google Books, LL/34902
1861, Alcoholic Varnish for Glass Positives - Henry Rigge, Advert, Google Books, LL/35365
Unknown artist, 1900, Manufacture of albumen paper in Dresden, Ca. 1890. The first step is to separate the eggs., [Manufacture of albumen paper in Dresden], Book illustration, Private collection of James Reilly, LL/42673
Unknown artist, 1900, The albumen is beaten to a foam using steam-driven churns., [Manufacture of albumen paper in Dresden], Book illustration, Private collection of James Reilly, LL/42674
Unknown artist, 1900, The albumen is then fermented in large casks for several days., [Manufacture of albumen paper in Dresden], Book illustration, Private collection of James Reilly, LL/42675
Unknown artist, 1900, Paper is then floated on the albumen solution and hung on racks to dry., [Manufacture of albumen paper in Dresden], Book illustration, Private collection of James Reilly, LL/42676
Unknown artist, 1900, The coated paper is "calendered" in rolling presses to make it more flexible., [Manufacture of albumen paper in Dresden], Book illustration, Private collection of James Reilly, LL/42677
Unknown artist, 1900, The paper is sorted into different quality levels and packed for shipment., [Manufacture of albumen paper in Dresden], Book illustration, Private collection of James Reilly, LL/42678