Research and Writings, consists of a potpourri of personal essays, book reviews, research inquiries, and speeches that span nearly a fifty year period. Of perhaps the most interest is De Leon's 1974 credo of atheism; his 1925 one act musical drama presented at The League for Industrial Democracy conference; his book review of Robert Hoxie's Trade Unionism in the United States (undated); and his 1926 speech to The League for Industrial Democracy entitled "Communism in the USA."