Jenks, J. E. (August 13, 1921). "The Army: Coast Artillery Corps". Army-Navy-Air Force Register and Defense Times. 70. Washington, DC: Army and Navy Publishing Company: 166.
dtic.mil
apps.dtic.mil
Giffin, Stewart S. (May 1930). "Major General John W. Gulick, Chief of Coast Artillery"(PDF). The Coast Artillery Journal. Washington, DC: U.S. Army Coast Artillery Corps. pp. 382–384. Archived(PDF) from the original on March 2, 2017. Retrieved June 18, 2018.
Giffin, Stewart S., ed. (April 1, 1930). "Major General Andrew Hero, Jr"(PDF). Coast Artillery Journal. Washington, DC: Hayworth Printing Company: 289. Archived from the original(PDF) on November 2, 2016. Retrieved March 7, 2016.
Giffin, Stewart S., ed. (April 1, 1930). "Major General Andrew Hero, Jr"(PDF). Coast Artillery Journal. Washington, DC: Hayworth Printing Company: 289. Archived from the original(PDF) on November 2, 2016. Retrieved March 7, 2016.
Giffin, Stewart S. (May 1930). "Major General John W. Gulick, Chief of Coast Artillery"(PDF). The Coast Artillery Journal. Washington, DC: U.S. Army Coast Artillery Corps. pp. 382–384. Archived(PDF) from the original on March 2, 2017. Retrieved June 18, 2018.
westpointaog.org
"Memorial, Andrew Hero Jr". West Point Association of Graduates. West Point, NY. Retrieved March 7, 2016.