- Combined atlases and wall maps, 1849, 1866, 1875, 1908 Delaware County, Ohio
- Delaware County Ohio, pictorial history, Delaware County Historical Society
- The American "War for the Union", a view from the ranks : the Civil War diaries, of Charles E. Smith, citizen soldier, 32nd O.V.I. Delaware County, Ohio ; compilers: George R. Cryder, Stanley R. Miller
- Index, "heads of family" from 1880 census, Delaware County, Ohio, abstracted by Marilyn M. Cryder ; verified by Alice H. Baker ; computerized for publication by George R. Cryder