Trade Lectures Bound volume of trade lectures, 1917-1922. Some of the lectures also feature other information, of note is an address on capital and labour after the war [World War One], 1917-1918. There are also two loose volumes, 1918-1919 and 1920-1921 and two bound duplicates. Subjects covered include, printing, technical education, technics, women printers and advertising. 1917-1922