Mary, Your response annys me, as have all the other faculty who continue to try to educate folks on the net who have asked legitimate questions regarding research leads. Why spin such diatribe on us when you could just delete the e-mail that you do not like? There are fabulous sources on ash trays, glass and ceramic insulators, battlefields, etc. published by obscure outfits that do not make it into libraries like Berkeley. Instead of beating on the amateurs and students, share in the exchange..... treat the e-mail like conference cocktail talk where no one has a library between the lounge and the piano, but everyone has toughts on a good place to look for things. Sheesh! Ron May