Giesecke, Frederick E. Mechanical Drawing. Part I, Use of Instruments, Lettering, Geometrical Problems, and Projections. 3d ed. Chicago, Ill.: Eugene Dietzgen Co., 1908.

Giesecke, Frederick E. Mechanical Drawing. Part I, Use of Instruments, Lettering, Geometrical Problems, and Projections. 3d ed. Chicago, Ill.: Eugene Dietzgen Co., 1908.