Commodore at Sea/Spartan Planet

Series John Grimes
Paul Alexander
Author A. Bertram Chandler
Year 1979 (first published 1971/1969)
Publisher Ace
ISBN unknown

on the rim of space, where the very fabric of space and time is stretched almost to bursting, and the boundaries between then and now, between here and there, are so thin as to be almost non-existent. And so John Grimes should hardly have been so surprised to meet…Sherlock Holmes? Lady Chatterley? Tarzan and Jane? A. Bertram Chandler??

Commodore at Sea/Spartan Planet available on Amazon

Thanks to Still Books for the cover