Item no. P1313 (cover)

Type: cover

Country: USA

Date of use: 30 September 1893

Business stationery (cover) used by the MALLINCKRODT CHEMICAL WORKS in St. Louis (Missouri, USA), a chemical factory (operating since 1867) producing various products, also chemicals for photographic purposes that were described in “Mallinckrodt Photographic Chemicals” (e.g. issue 1943). It was for some time (since 1880) a major producer of bromides for photography. Mallinckrodt published manual (several times reissued) “The Chemistry of Photography” (1931).