Yes, indeed, Angie. Many ideas are born before the time in which they can be implemented. My article on the Moon briefly tells of the Ukrainian known as Yuri Kondratyuk who originated the LOR that Houbolt persuaded NASA to use for Apollo. Kondratyuk did his brilliant work over two decades before his death in WWII and well before the Space Age. Fortunately, his papers were smuggled out of the Soviet Union after the war.