Subject
4 free books about ether (space), free to read online. Chapter 1 of any book is free, no account needed.
Aether and Gravitation
William George Hooper
The Ether of Space
Sir Oliver Lodge
From Newton to Einstein: Changing Conceptions of the Universe
Benjamin Harrow
On the relative motion of the earth and the luminiferous æther
Michelson, Albert A. (Albert Abraham); Morley, Edward Williams
