Rope and Its Uses, Iowa State College of Agriculture and Mechanic Arts.
American Wire Rope, American Steel and Wire Company.
Boy Scout Manual.
Engineer Field Manual, Fifth Edition, Government Printing Office, Washington, D. C.
Rope Work, L. M. Roehl, The Bruce Publishing Co., Milwaukee, Wis.
R. O. T. C. Engineer.
Columbia Knots and Splices, Columbia Rope Co., Auburn, New York.
American Boy Magazine—July 1917.