US WWII SMALL HARDCOVERED POCKET SIZE BOOKLETS, 4″ X 5 1/2″, PROBABLY SOLD IN SETS DURING WWII

“MILITARY SCIENCE AND TATICS; ELEMENTARY TRAINING”, PUBLISHED BY COL P.S. BOND USA, WASHINGTON D.C., 1941, 278 PAGES, SOFT COVERED BOOK, C/W AN “ROTC” TRAINING CONTOUR MAP WITH SCALES, BOTH