File December 14, 1870-May 21, 1888 Box 1, Folders 1-45 In: Charles Cogswell papers, 1869-1921 (majority within 1869-1899) » Correspondence and documents
File May 21, 1888-July 21, 1921, and undated Box 2, Folders 1-34 In: Charles Cogswell papers, 1869-1921 (majority within 1869-1899) » Correspondence and documents
File Undated Box 2, Folder 37 In: Charles Cogswell papers, 1869-1921 (majority within 1869-1899) » Photograph