For the most complete write-up known, look at: Encyclopedia of Victorian Colored Pattern Glass, Book 5: U.S. Glass from A to Z by William Heacock and Fred Bickenheuser. Also take a look at: http://cgi.rootsweb.com/~genbbs/genbbs.cgi/USA/Pa/AlleghenyBios?read=16 AND http://cgi.rootsweb.com/~genbbs/genbbs.cgi/USA/Pa/AlleghenyBios?read=17 AND http://cgi.rootsweb.com/~genbbs/genbbs.cgi/USA/Pa/AlleghenyBios?read=18 Cora Ott