Coulter, R., Barclay, T., & Peskin, A. (1991). Volunteers: The Mexican War journals of Private Richard Coulter and Sergeant Thomas Barclay, Company E, Second Pennsylvania Infantry. Kent, Ohio: Kent State University Press.

Coulter, Richard, Thomas Barclay, and Allan Peskin. Volunteers: The Mexican War Journals of Private Richard Coulter and Sergeant Thomas Barclay, Company E, Second Pennsylvania Infantry. Kent, Ohio: Kent State University Press, 1991.

Coulter, Richard, Thomas Barclay, and Allan Peskin. Volunteers: The Mexican War Journals of Private Richard Coulter and Sergeant Thomas Barclay, Company E, Second Pennsylvania Infantry. Kent, Ohio: Kent State University Press, 1991.