- Third U. S. Army After Action Report, Volume I, Chapter 11 - April Operations Page 337, 338
- 244th Field Artillery Battalion After Action Report, 1st April to 30th April
- 244th Field Artillery Battalion Journal
- W. U. (Doc) Savage Letter, December 15, 1949
- W. U. (Doc) Savage Letter, December 15, 1949
- Hq Battery, Frederick (Fred) Priewert, 2nd Lt., Journal
- PFC Harry G. MacDuffee, B Battery, 244th Field Artillery - Battery Record
- Department of The Army, USH&EC, USAMHI, 202-244th 1945, “History of The 244th Field Artillery Battalion During World War II
- U.S. Army Military History Institute, Archives Branch, Colonel Davis Papers
- 244th F.A. Battalion Battery HQ & Hq Morning Report
- 244th F.A. Battalion Battery A Morning Report
- 244th F.A. Battalion Battery C Morning Report
- 244th F.A. Battalion Battery SB Morning Report
- Third U. S. Army After Action Report, Volume I, Chapter 11 - April Operations Page 338, 339
- 244th Field Artillery Battalion Journal
- 244th F.A. Battalion Battery HQ & Hq Morning Report
- Third U. S. Army After Action Report, Volume I, Chapter 10 - March Operations Page 339, 340
- 244th Field Artillery Battalion Journal
- 244th F.A. Battalion Battery HQ & Hq Morning Report
- Third U. S. Army After Action Report, Volume I, Chapter 11 - April Operations Page 340, 341
- 244th Field Artillery Battalion After Action Report, 1st April to 30th April
- 244th Field Artillery Battalion Journal
- Hq Battery, Frederick (Fred) Priewert, 2nd Lt., Journal
- 244th Field Artillery Battalion HQ & Hq Battery Morning Report
- 244th F.A. Battalion Battery C Morning Report
- Third U. S. Army After Action Report, Volume I, Chapter 11 - April Operations Page 341, 342
- 244th Field Artillery Battalion Journal
- 244th Field Artillery Battalion After Action Report, 1st April to 30th April
- 244th F.A. Battalion Battery C Morning Report
- Third U. S. Army After Action Report, Volume I, Chapter 11 - April Operations Page 341, 342
- 244th Field Artillery Battalion After Action Report, 1st April to 30th April
- 244th Field Artillery Battalion Journal
- HQ, 244th F.A. Bn., APO 403, Major Carey A. Clark Commanding, Letter to Officers and Enlisted Men, History of the 244th, 26th June 1945
- W. U. (Doc) Savage Letter, December 15, 1949
- PFC Harry G. MacDuffee, B Battery, 244th Field Artillery - Battery Record
- W. U. (Doc) Savage Letter, December 15, 1949
- Hq Battery, Frederick (Fred) Priewert, 2nd Lt., Journal
- 244th F.A. Battalion Battery HQ & Hq Morning Report
- 244th F.A. Battalion Battery SB Morning Report
- Third U. S. Army After Action Report, Volume I, Chapter 11 - April Operations Page 343, 344
- 244th Field Artillery Battalion Journal
- 244th F.A. Battalion Battery HQ & Hq Morning Report
- Third U. S. Army After Action Report, Volume I, Chapter 11 - April Operations Page 344, 346
- 244th Field Artillery Battalion Journal
- 244th Field Artillery Battalion After Action Report, 1st April to 30th April
- W. U. (Doc) Savage Letter, December 15, 1949
- W. U. (Doc) Savage Letter, December 15, 1949
- Hq Battery, Frederick (Fred) Priewert, 2nd Lt., Journal
- 244th F.A. Battalion Battery HQ & Hq Morning Report
- 244th F.A. Battalion Battery C Morning Report
- 244th F.A. Battalion Battery SB Morning Report
- Third U. S. Army After Action Report, Volume I, Chapter 11 - April Operations Page 346, 347
- 244th Field Artillery Battalion Journal
- Hq Battery, Frederick (Fred) Priewert, 2nd Lt., Journal
- PFC Harry G. MacDuffee, B Battery, 244th Field Artillery - Battery Record
- 244th F.A. Battalion Battery C Morning Report
- Third U. S. Army After Action Report, Volume I, Chapter 11 - April Operations Page 347, 348
- 244th Field Artillery Battalion Journal
- W. U. (Doc) Savage Letter, December 15, 1949
- 244th Field Artillery Battalion After Action Report, 1st April to 30th April
- W. U. (Doc) Savage Letter, December 15, 1949
- Hq Battery, Frederick (Fred) Priewert, 2nd Lt., Journal
- PFC Harry G. MacDuffee, B Battery, 244th Field Artillery - Battery Record
- Department of The Army, USH&EC, USAMHI, 202-244th 1945, “History of The 244th Field Artillery Battalion During World War II
- 244th F.A. Battalion Battery HQ & Hq Morning Report
- Third U. S. Army After Action Report, Volume I, Operations, Chapter 11 - April Operations Page 349
- 244th Field Artillery Battalion Journal
- W. U. (Doc) Savage Letter, December 15, 1949
- W. U. (Doc) Savage Letter, December 15, 1949
- 244th Field Artillery Battalion After Action Report, 1st April to 30th April
- PFC Harry G. MacDuffee, B Battery, 244th Field Artillery - Battery Record
- 244th F.A. Battalion Battery HQ & Hq Morning Report
- 244th F.A. Battalion Battery SB Morning Report
- Third U. S. Army After Action Report, Volume I, Chapter 11 - April Operations Page 350
- 244th Field Artillery Battalion Journal
- 244th Field Artillery Battalion After Action Report, 1st April to 30th April
- W. U. (Doc) Savage Letter, December 15, 1949
- W. U. (Doc) Savage Letter, December 15, 1949
- Hq Battery, Frederick (Fred) Priewert, 2nd Lt., Journal
- PFC Harry G. MacDuffee, B Battery, 244th Field Artillery - Battery Record
- 244th Field Artillery Battalion After Action Report April 1945
- U.S. Army Military History Institute, Archives Branch, Colonel Davis Papers
- 244th F.A. Battalion Battery HQ & Hq Morning Report
- 244th F.A. Battalion Battery SB Morning Report
- Third U. S. Army After Action Report, Volume I, Chapter 11 - April Operations Page 351, 352
- 244th Field Artillery Battalion Journal
- W. U. (Doc) Savage Letter, December 15, 1949
- 244th Field Artillery Battalion After Action Report, 1st April to 30th April 1945
- W. U. (Doc) Savage Letter, December 15, 1949
- Hq Battery, Frederick (Fred) Priewert, 2nd Lt., Journal
- Serving In Harm's Way, A Record of My Service In The U.S. Army and WWII, Byron G. Rogers jr., January 2006
- 244th F.A. Battalion Battery HQ & Hq Morning Report
- 244th F.A. Battalion Battery C Morning Report
- 244th F.A. Battalion Battery SB Morning Report
- Third U. S. Army After Action Report, Volume I, Chapter 11 - April Operations Page 352, 353
- 244th Field Artillery Battalion Journal
- PFC Harry G. MacDuffee, B Battery, 244th Field Artillery - Battery Record
- Third U. S. Army After Action Report, Volume I, Chapter 11 - April Operations Page 353, 354
- 244th Field Artillery Battalion Journal
- 244th F.A. Battalion Battery HQ & Hq Morning Report
- 244th F.A. Battalion Battery SB Morning Report
- Third U. S. Army After Action Report, Volume 1, Chapter 11 - April Operations Page 354
- 244th Field Artillery Battalion Journal
- 244th Field Artillery Battalion After Action Report, 1st April to 30th April
- Third U. S. Army After Action Report, Volume I, Operations, Chapter 11 - April Operations Page 354, 355, 356
- 244th Field Artillery Battalion Journal
- W. U. (Doc) Savage Letter, December 15, 1949
- Department of The Army, USH&EC, USAMHI, 202-244th 1945, “History of The 244th Field Artillery Battalion During World War II
- 244th Field Artillery Battalion After Action Report, 1st April to 30th April
- U.S. Army Military History Institute, Archives Branch, Colonel Davis Papers
- Serving In Harm's Way, A Record of My Service In The U.S. Army and WWII, Byron G. Rogers jr., January 2006
- Hq Battery, Frederick (Fred) Priewert, 2nd Lt., Journal
- PFC Harry G. MacDuffee, B Battery, 244th Field Artillery - Battery Record
- 244th F.A. Battalion Battery HQ & Hq Morning Report
- 244th F.A. Battalion Battery SB Morning Report
- Third U. S. Army After Action Report, Volume I, Chapter 11 - April Operations Page 356
- 244th Field Artillery Battalion Journal
- 244th F.A. Battalion Battery HQ & Hq Morning Report
- Third U. S. Army After Action Report, Volume I, Chapter 11 - April Operations Page 358
- 244th Field Artillery Battalion Journal
- W. U. (Doc) Savage Letter, December 15, 1949
- 244th Field Artillery Battalion After Action Report, 1st April to 30th April
- Hq Battery, Frederick (Fred) Priewert, 2nd Lt., Journal
- PFC Harry G. MacDuffee, B Battery, 244th Field Artillery - Battery Record
- U. S. Army Heritage and Education Center, U.S. Army Military History Institute 202-244th 1945, “History of The 244th Field Artillery Battalion During World War II, Page 5
- 244th F.A. Battalion Battery HQ & Hq Morning Report
- 244th F.A. Battalion Battery C Morning Report
- 244th F.A. Battalion Battery SB Morning Report
- Third U. S. Army After Action Report, Volume I, Chapter 11 - April Operations Page 359
- 244th Field Artillery Battalion Journal
- (Doc) Savage Letter, December 15, 1949
- 244th Field Artillery Battalion After Action Report, 1st April to 30th April
- W. U. (Doc) Savage Letter, December 15, 1949
- Hq Battery, Frederick (Fred) Priewert, 2nd Lt., Journal
- PFC Harry G. MacDuffee, B Battery, 244th Field Artillery - Battery Record
- 244th F.A. Battalion Battery HQ & Hq Morning Report
- 244th F.A. Battalion Battery C Morning Report
- 244th F.A. Battalion Battery SB Morning Report
- Third U. S. Army After Action Report, Volume I, Chapter 11 - April Operations Page 360
- 244th Field Artillery Battalion Journal
- W. U. (Doc) Savage Letter, December 15, 1949
- 244th Field Artillery Battalion After Action Report, 1st April to 30th April
- W. U. (Doc) Savage Letter, December 15, 1949
- Hq Battery, Frederick (Fred) Priewert, 2nd Lt., Journal
- PFC Harry G. MacDuffee, B Battery, 244th Field Artillery - Battery Record
- 244th F.A. Battalion Battery HQ & Hq Morning Report
- 244th F.A. Battalion Battery C Morning Report
- 244th F.A. Battalion Battery SB Morning Report
- Third U. S. Army After Action Report, Volume I, Operations, Chapter 11 - April Operations Page 360, 361
- 244th Field Artillery Battalion Journal
- W. U. (Doc) Savage Letter, December 15, 1949
- 244th Field Artillery Battalion After Action Report, 1st April to 30th April
- W. U. (Doc) Savage Letter, December 15, 1949
- Hq Battery, Frederick (Fred) Priewert, 2nd Lt., Journal
- PFC Harry G. MacDuffee, B Battery, 244th Field Artillery - Battery Record
- 244th F.A. Battalion Battery HQ & Hq Morning Report
- 244th F.A. Battalion Battery C Morning Report
- Third U. S. Army After Action Report, Volume I, Chapter 11 - April Operations Page 361, 362
- 244th Field Artillery Battalion Journal
- W. U. (Doc) Savage Letter, December 15, 1949
- 244th Field Artillery Battalion After Action Report, 1st April to 30th April
- W. U. (Doc) Savage Letter, December 15, 1949
- Hq Battery, Frederick (Fred) Priewert, 2nd Lt., Journal
- PFC Harry G. MacDuffee, B Battery, 244th Field Artillery - Battery Record
- 244th F.A. Battalion Battery HQ & Hq Morning Report
- 244th F.A. Battalion Battery C Morning Report
- 244th F.A. Battalion Battery SB Morning Report
- Third U. S. Army After Action Report, Volume I, Chapter 11 - April Operations Page 362
- 244th Field Artillery Battalion Journal
- 244th F.A. Battalion Battery C Morning Report
- Third U. S. Army After Action Report, Volume I, Chapter 11 - April Operations Page 363
- 244th Field Artillery Battalion Journal
- 244th F.A. Battalion Battery HQ & Hq Morning Report
- 244th F.A. Battalion Battery SB Morning Report
- Third U. S. Army After Action Report, Volume I, Chapter 11 - April Operations Page 369
- 244th Field Artillery Battalion Journal
- Combat History of the 344th Field Artillery Battalion, Chapter V, Page 3, 90th Infantry Division Association
- W. U. (Doc) Savage Letter, December 15, 1949
- 244th Field Artillery Battalion After Action Report, 1st April to 30th April
- W. U. (Doc) Savage Letter, December 15, 1949
- Hq Battery, Frederick (Fred) Priewert, 2nd Lt., Journal
- PFC Harry G. MacDuffee, B Battery, 244th Field Artillery - Battery Record
- 244th F.A. Battalion Battery HQ & Hq Morning Report
- 244th F.A. Battalion Battery C Morning Report
- 244th F.A. Battalion Battery SB Morning Report
- Third U. S. Army After Action Report, Volume I, Operations, Chapter 11 - April Operations Page 370
- 244th Field Artillery Battalion Journal
- 244th F.A. Battalion Battery C Morning Report
- Third U. S. Army After Action Report, Volume I, Chapter 11 - April Operations Page 370, 371
- 244th Field Artillery Battalion Journal
- W. U. (Doc) Savage Letter, December 15, 1949
- W. U. (Doc) Savage Letter, December 15, 1949
- W. U. (Doc) Savage Letter, December 15, 1949
- Hq Battery, Frederick (Fred) Priewert, 2nd Lt., Journal
- PFC Harry G. MacDuffee, B Battery, 244th Field Artillery - Battery Record
- 244th Field Artillery Battalion After Action Report, 1st April to 30th April
- 244th F.A. Battalion Battery HQ & Hq Morning Report
- 244th F.A. Battalion Battery C Morning Report
- 244th F.A. Battalion Battery SB Morning Report
- Third U. S. Army After Action Report, Volume I, Chapter 11 - April Operations Page 371, 372
- 358th Infantry After Action Report, 1 April 1945 to 30 April 1945
- 244th Field Artillery Battalion Journal
- 244th F.A. Battalion Battery SB Morning Report
- Third U. S. Army After Action Report, Volume I, Chapter 11 - April Operations Page 372, 373
- 244th Field Artillery Battalion After Action Report, 1st April to 30th April
- 244th Field Artillery Battalion Journal
- 244th Field Artillery Battalion After Action Report April 1945
- 244th Field Artillery Battalion After Action Report, 1st April to 30th April