Words and Life
Hilary Putnam
Longman Basic Dictionary of American English
Ruth Urbom
The Entire Project Gutenberg Works of Mark Twain
Mark Twain
Ominous Parallels
Leonard Peikoff
Funk & Wagnalls New Encyclopedia
Leon L. Bram & Robert S. Phillips & Norma H. Dickey
The Timeline Book of Science
George Ochoa & Melinda Corey