Many novels from the golden age of adult books are to be found here -- a very good site for those who enjoy that sort of thing. The webmaster asks nothing from visitors; the books are free.
Two things to be aware of:
1) The servers are sensitive to software that agressively downloads materials en masse. The site was shut down temporarily a few weeks ago by its webmaster to post warnings about the use of such software. Play nice, kids. If you want all the books at once, a bittorrent link is provided.
2) I've spotted that many of the posted books are bowdlerized or edited from their original form (pages or chapters missing, age alterations, the removal of red-flag words such as 'youngster' etc, as well as common-but-could-be-dirty words such as 'little' (missing entirely from one e-novel, having appeared in the original publication 185 times). Some of these "let's-be-safe" edits play havoc with storylines, so be warned.
Many of the book covers included are artwork, although some titles have photocovers. And of these, many feature adult film models of the era (late 70's, early 80's).
Enjoy.