[posted] Posted (#68428, Hubble) !

[ajhaines]

Extra-galactic nebulae, by Edwin Hubble                                68428
  [Author: Edwin Hubble]
  [Link: https://www.gutenberg.org/6/8/4/2/68428]
  [Files: 68428-0.txt; 68428-h.htm]

Thanks to an anonymous Project Gutenberg volunteer (This book was produced
from images made available by the HathiTrust Digital Library.)

Regards,
Al