In this, the fourth and final volume of his memoirs, Boris Chertok concludes his monumental trek through a nearly 100-year life. As with the previous English-language volumes, the text has been significantly modified and extended over the original Russian versions published in the 1990s. The first volume covered his childhood, early career, and transformation into a missile engineer by the end of World War II. In the second volume, he took the story up through the birth of the postwar Soviet ballistic-missile program and then the launch of the worlds artificial satellite, Sputnik. This was followed, in the third volume, by a description of the early and spectacular successes of the Soviet space program in the 1960s, including such unprecedented achievements as the flight of cosmonaut Yuriy Gagarin. The fourth volume concludes his memoirs on the history of the Soviet space program with a lengthy meditation on the failed Soviet human lunar program and then brings the story to a close with the events of the 1970s, 1980s, and 1990s. This, the fourth and final volume is largely devoted to the Soviet project to send cosmonauts to the Moon in the 1960s, covering all aspects of the development of the giant N-1 rocket. The last portion of this volume covers the origins of the Salyut and Mir space station programs, ending with a fascinating description of the massive Energiya-Buran project, developed as a countermeasure to the American Space Shuttle. NASA SP-2011-4110.