Ferret Out: phonography resources (2)

http://www.worldofgramophones.com/the_phonograph_and_how_to_use_it.html
http://memory.loc.gov/ammem/edhtml/edcyldr.html

http://inventors.about.com/library/inventors/bledisondiscphpgraph2.htm

http://inventors.about.com/library/inventors/bledisondiscphpgraph.htm
http://inventors.about.com/library/inventors/bledison.htm#phonograph

http://inventors.about.com/od/audiowaxrecordstomp3/History_of_Sound_Recoding.htm

http://www.inkyfingers.com/RECORD/NOBLEEX/NobleVVX.html