I have had varying luck at the following sites finding books. http://www.addall.com/ http://www.allbookstores.com/ http://www.bestwebbuys.com/ http://www.pricefarmer.com/cgi-bin/farm http://www.bookfinder.com/ For more obscure and antique books, you might have luck at: http://www.biblio.com/ http://www.abebooks.com/?AID=7134924&PID=265119 http://www.powells.com/ http://www.bookcloseouts.com/bc/home.asp I hope that helps. Tom S.