Featuring unique material from the members of the Detroit Rocket Society--many of whom are regarded as the fathers of modern rocketry--this collection offers a privileged glimpse at an obscure rarity of rocket history. More than 50 years out of print, the important technical papers of Professor Hermann Oberth, Krafft Ehricke, Eugen Sanger, Heinz-Hermann Koelle, Hans Kaiser, and others are a testament to the efforts that laid the foundation for humankind's ascent into space.