Heatwole, C. J., Heatwole, D. A., Hütwohl, J., Wayland, J. W., & Cronau, R. (1970). History of the Heatwole family from the beginning of the seventeenth century to the present time (1907) (2nd print.). North Newton, Kan.: Mennonite Press.

Heatwole, Cornelius J., David A. Heatwole, Jacob Hütwohl, John Walter Wayland, and Rudolf Cronau. History of the Heatwole Family From the Beginning of the Seventeenth Century to the Present Time (1907). 2nd print. North Newton, Kan.: Mennonite Press, 1970.

Heatwole, Cornelius J., et al. History of the Heatwole Family From the Beginning of the Seventeenth Century to the Present Time (1907). 2nd print. North Newton, Kan.: Mennonite Press, 1970.