The Little Blue Books of E Haldeman-Julius

http://library.pittstate.edu/spcoll/ndxhjulius.html

There exists a series, called Little Blue Books, once billed as a university in print. I mail-ordered a number of them, including, Why I Am An Atheist, by Bertrand Russell. Printed on cheap paper, hand stapled, with a blue construction paper cover, they were marvelous. I wish today I had kept them.