Vintage Flash Gordon "Into the Water World of Mongo" hardcover book with jacket cover. Book in excellent shape. Jacket cover in rough shape. 1971 by Alex Raymond. 9" x 12". Illustrations in black and white. Other Flash Gordon books available (see pictures): In the Planet Mongo (1974), In the Ice Kingdom of Mongo (1967), and another (different) title Into the Water World of Mongo (1974). Located in Webster. $8 cash or Venmo EACH.