Volumes 1 and 2 contain information on the production of the potlids and plates, the color printing process, and the sources of the prints used as transfers in Staffordshire pottery. An essential source for both beginning and advanced collectors. Volume 2 "Supplementary Edition to 1924 published in 1927" and limited to 500 copies. V. 1 has 205 pages and V. 2 has 61 pages. Both are first editions.