The Kendrick Philander Shedd Papers include correspondence about his resignation from the University of Rochester faculty for socialist sympathies; reminiscences of the socialist movement in Milwaukee, 1915; personal scrapbooks and autobiography; as well as published and unpublished writings. There are also scrapbooks of minutes, correspondence, and clippings on Socialist Educational Federation of Rochester, sponsored by the Progressive Working People's Lyceum and Local Rochester, Socialist Party, 1914; letters and papers concerning the Rochester Socialist Sunday School and Young People's Socialist League; scrapbooks about the Social Center at School No. 9, Rochester, 1908-10; and a defense of Shedd by Lloyd Somers, with exhibits.

The collection consists of four scrapbooks on the Rochester Socialist Sunday School, two on the Young People's Socialist League of Rochester, and one on the Rochester Labor Lyceum, kept between 1910 and 1919. Also included are a manuscript minutes book kept by the Central Branch Socialists between 1910 and 1913, and a manuscript membership dues payment record for an unnamed Hungarian ethnic group between 1909 and 1913. The scrapbooks contain typescript and manuscript letters, printed material, ephemera, and photographs. The Rochester Socialist Sunday School scrapbooks contain an index and typescript history of the organization by Kendrick Shedd. It was Shedd who apparently kept the scrapbooks for the Sunday school. Letters from prominent socialists and reformers of the period, including Margaret Sanger, Scott Nearing, Charles Edward Russell, Theodore Debs, George Goler, Walter Rauschenbusch, Jim Larkin, Algernon Lee, Florence Cross Kitchelt, and Emma Goldman, are in the latter scrapbooks and the Labor Lyceum scrapbook.