Wright, Jr., Robert K.; MacGregor Jr., Morris J. "Thomas Fitzsimons". Soldier-Statesmen of the Constitution. Washington D.C.: United States Army Center of Military History. CMH Pub 71-25. Archived from the original on 6 August 2020. Retrieved 17 April 2022.
Wright, Jr., Robert K.; MacGregor Jr., Morris J. "Thomas Fitzsimons". Soldier-Statesmen of the Constitution. Washington D.C.: United States Army Center of Military History. CMH Pub 71-25. Archived from the original on 6 August 2020. Retrieved 17 April 2022.