„Free Public Domain and Copyrighted e-Books Online“
By Sam Vaknin
„By far the largest and best maintained index is John Ockerbloom’s
Online Books page, with well over 20,000 individual items listed
< http://onlinebooks.library.upenn.edu >. It offers links to new books
almost daily < http://onlinebooks.library.upenn.edu/new.html >. Browsing
through this index is bound to get you virtually everywhere. There is
rarely a (legal) book online that is not listed here“
This is not true.
1. OBP has 20,000+ free books
It is recommended to use both listings. Example: keyword metaphor brings 6 books (OBP 4, DBI 5).
2. There are some large collections (and a lot of small collections) NOT in the OBP (nor in the DBI).
Examples of large collections with English books not in the OBP
OHIOLINK Brittle Books
UMich Digital General Collection
Hundreds of items.