Author and illustrator. Manuscripts (1918–1971) of works by Lenski; original art work (1917–1939); typescripts of speeches and articles (1932–1970) by Lenski; business and personal correspondence (1912–1972); biographical materials (1930–1970) on Lenski, including a scrapbook compiled by Letha Barde; and information (1956–1972) concerning other Lois Lenski collections. [This collection has a restriction. See finding aid for details.]