Personal correspondence, diaries, legal papers, and financial records of Northrup, c.1870-1919, and his predecessor, lawyer and land agent William Samuel Johnson, c.1820-1897, both of Ellicottville, N.Y. Also correspondence and financial records of L. Ellen Northrup and Mrs. Elvena D. Northrup about the Northrup Style Shoppe, c.1890-1960, and correspondence with Eugene Debs, Theodore Debs, and Emma Goldman concerning socialism, women's rights, and other topics.

Correspondence relating to Rumball's pastorates in Newfoundland, Maine, and Rochester, N.Y. and to his interest in the modernist-fundamentalist religious controversy. Correspondents include William Channing Gannett, Emma Goldman, Frederick L. Hosmer, Jenkin Lloyd Jones, Walter Rauschenbusch, and Andrew Dickson White.