Gutenberg is great, they are getting more and more books on there.
Jim Kjelgaard (I hope I spelled that right), Alfred Payson Terhune, etc. Lots of good stuff as long as it is old enough to be out of copyright.
Dr. Seuss~DLH (brother's cat)~June 2007-
Misty~DSH (my cat & Mooby's mom)-?- Sept. 15, 2014
MooBoots(Mooby) ~ DMH(Mom's cat)~July 21, 2008-
Sunshine~ Golden retriever X white german sheperd (Dad's dog)~October 24, 2008-