Walker O. Cain (1915-1993) was an American architect associated with the firms of McKim, Mead & White (1940-1961), Steinmann, Cain & White (1961-1965), Steinmann & Cain (1965-1967), Walker O. Cain & Associates (1967-1978), and Cain, Farrell and Bell (1978-1986). Collection consists chiefly of travel sketches, cartoons, invitations, and other ephemera. The collection also includes correspondence with Alexander Calder and photographs of the sculptor and his works; photographs and printed materials related to the firm of McKim, Mead & White; Scrapbooks; Medals; and a few architectural drawings.