Wolf. The first attempt at an intercontinental bomber came in 1935 when the Army Air Corps granted Donald Douglas a contract to build a "Guardian of the Hemisphere." This illustrated profile examines the resulting design — the XB-19 — which was a top secret project with just one prototype built. See details on the "Flying Laboratory" and enjoy both maintenance manual insight and rare, never-before-published photographs on the bomber that helped lead to the B-36 Peacemaker. 176 pages, 251 B&W and color photos, 8½"x 11", hardcover.