Washington: GPO, 1957. Fourteen booklets from the lengthy series; present here are parts 50-54, 56, 58-62, 64-66. The longest is 89 pages, most much shorter. Each part contains the testimony of one or more witnesses on the topic of Soviet influence in the US. Witnesses include some friendly and some hostile; Eugene Dennis ranks among the latter. Part 66 includes a reprint of Martin Tytell's interesting account of his work forging a typewriter font identical to that used by Alger Hiss as part of the Hiss trial defense.