In later years, he wrote two books on the early history of space exploration in Russia, "The World's First Society of Interplanetary Flight" and "The Dawn of Cosmonautics" (1965).
在以后的岁月里，他撰写了二部有关俄罗斯早期太空探索史的书籍-《世界上首个宇航协会》和《航天的黎明》（1965年）。