Source: Civil War–era loyalty oaths, 1861-1871, Dexter P. Tiffany Collection Location: Dexter P. Tiffany Collection, Archives
Last Name:	Callahan
First Name:	John
Middle Name:	P.
Collection:	Dexter P. Tiffany Collection
Box:	69
Folder:	4
Date of Document:	10/24/1866