Illinois Civil War Muster and Descriptive Rolls Database (Illinois State Archives):
Shaffer, Leo - Wag - Co F - 138 IL US INF
Residence - Joliet, Will Co, IL; Join, 17May1864; Age, 18; Born, Shelby Co, OH
Height, 5' 5"; Hair, dark; Eyes, gray; Complexion, fair; Single; Baker
Mustered out, 14Oct1864
American Civil War Soldiers (ancestry.com)
Civil War Soldiers & Sailors System Search Detail (National Park Service):
National Graves Registration Database (Sons of Union Veterans of the Civil War):
Will County Illinois USGenWeb Necrologist Reports (© 2002 The ILGenWeb Project All Rights Reserved):
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