Coal-tar colors used in food products
A 1912 government publication from Washington, printed by the Government Printing Office, written by Bernhard Conrad Hesse and aimed at officials and food producers on coal-tar dyes in food. The one picture is the circular seal of the United States Department of Agriculture, showing a sheaf of wheat over a plough on a shield, ringed by stars and dated 1862 and 1889 with the motto 'Agriculture and Commerce, the foundation of manufacture'. A designer could take from it the classic federal seal layout of a shield within a text ring, with a rope border and stars.
