Harrisburg, Penna. The Military Service Publishing Company, 1940. Hardcover. Red cloth, 623 pp., illus., weighs 5 lbs., two protractors in rear envelope. G+ (Ex-library, with usual library markings, bookplate on front inside cover, pocket at back inside cover, pages are slightly tanned, tabs are worn off, otherwise in very good shape for a large and older book.). Item #135409
In various paginations, with 2 vols. for Basic and 2 vols. for Advanced, all in one book. Sections are separated by three tabbed pages, and the tabs are evident but no longer protrude, assuming they ever did. The original cardboard protractors are nice to have included.