- Maintained by: Sons of Union Veterans of the Civil War
- Originally Created by: US Veterans Affairs Office
- Added: 3 Mar 2000
- Find A Grave Memorial 2597819
Find A Grave, database and images (https://www.findagrave.com : accessed ), memorial page for Charles W. Schoonmaker (unknown–23 Aug 1918), Find A Grave Memorial no. 2597819, citing Cypress Hills National Cemetery, Brooklyn, Kings County (Brooklyn), New York, USA ; Maintained by Sons of Union Veterans of the Civil War (contributor 48353502) .