This is the addendum to a planned series of books on the Uniforms of the US Army Ground Forces. It contains a listing of every known manufacturer of US Army uniforms between 1939 and 1945, as well as a listing of the Quartermaster specifications used to make those uniforms. In addition to the names of the manufacturers, this reference includes what they made, under what contract number and date of that contract. A list of useful references for researchers is included at the back.