Robert J. Bradbury writes:
> I'm not sure whether he dealt with trans-humanism per se but
> he definately included interstellar colonization in his
> "Plan for Space Exploration" (published ~1926).
Blueskyeing is cheap, one of Tsiolkovsky's better points was that his speculations were based on hard science and real numbers (e.g. he mentions escape velocity, multi-stage rockets, and lots of other goodies). (He didn't understand continuous burn rockets, though, IIRC he suggested fuelling them with a rapid sequence of explosions, occuring in a conical chamber (not Lavalle)).
I think a lot of his work predates ~1926, where a number of rocket enthusiasts (GIRD) were already active world wide.
Unfortunately I never came around reading any of his works.