The Calotype, familiarly Explained: being a treatise on its objects and uses, and the methods of preparing the sensitive paper, and taking pictures by the agency of light Author: W Raleigh Baxter Publisher: London: H. Renshaw, 1842. Reproduction by James Gehrt - Front Porch Editions - 2019 Subjects Calotype, Photography -Early works to 1850, Photography, paper negative, history of photography, James Gehrt, Henry Fox Talbot, Talbotype, early photography, chemicals, process