Mark Twain's Letters, 1876-1880, An Electronic Edition, Volume ...
Mark Twain
Robert E. Lee: A Life From Beginning to End (American Civil ...
Hourly History
Historical dictionary of Leibniz's philosophy
Stuart C. Brown & N. J. Fox
Historical dictionaries of religions. philosophies. and movements (66)
The Scheme Programming Language, Fourth Edition
R. Kent Dybvig
Truth and Ontology
Trenton Merricks
Virtual Mathematics: The Logic of Difference
Simon Duffy