Correspondence, minutes, writings, reports, bibliographies, research notes, and other records relating chiefly to the commission's publication of Lincoln Day by Day: a Chronology, 1809-1865 (1960; 3 volumes), compiled by William E. Baringer and Charles Percy Powell, under the editorship of Earl Schenck Miers. Other material relates to the publication of the commission's Lincoln Sesquicentennial, 1809-1959: Handbook of Information (1958); Howard K. Beale; Illinois Lincoln Sesquicentennial Commission; Indiana Lincoln Sesquicentennial Commission; Lincoln Group of the District of Columbia; and James Monaghan's bibliography of Lincoln.