Original issue, US Army Technical Manual, 75 pages, size is 8 1/4" x 10 3/4", stapled, three hole punched, dated 8 March 1973. This is not a commercial copy or print but an original manual published in 1973. Title of publication is - TM 5-6115-573-13, Operator, Organizational, and DS Maintenance for Generator Sets, Gasoline Engine w/Carrying Sound Housing Ca, PU-422B/U, 0.4KW, AC, 115V, 400 Hz and 100V,DC, 29.3V, Admiral Model GJ4266, Henry Spen Model 909238-1A, PU-532/PPS-4, 0.3 KW, AC, 115V, 400 Hz, 30V,17 Amp, 24V, 2.5 Amp, DC, Admiral Model G-2633, Henry Spen Model 909238-1B. Publication is designed to provide information and instructions for the operation of thes generators and for the maintenance requirements and procedures. Very well illustrated using clear and detailed photographs and line drawings.