Hints for Non-Commissioned Officers on Actual Service is an 1804 C. Boworth, Bell Yard, Fleet Street booklet by Colonel Sontag.

A Handbook for Infantry Containing the First Principles of Military Discipline, Founded on Rational Method.

Military Order of the Loyal Legion of the United States, A NCO Interview with President Lincoln 1907 War Papers booklet by Samuel K. Hall.

Infantry Field Manual Organization and Tactics of Infantry the Rifle Battalion is a 1910 United States Government Printing Office booklet.

Instructions for the Non-Commissioned Officer is a 1909 U.S. Army Military History Institute booklet written by John W. Norwood.

Translation of Problems for Non-Commissioned Officers by Colonel Immanuel is a 1916 Engineer School article written by Mason M. Patrick.