In compiling this website the following sources have been consulted and provide further information about the companies named::
Bagley Glass - Angela Bowey, Derek and Betty Parsons, OAR Publishing, 2004 ISBN 0473098369
Chance Expressions - David P Encill, Cortex Design, 2008, ISBN 9780954919610
Davidson Glass, a history - Chris & Val Stewart, 2005, ISBN 0955036305
Miller's glass fact file a-z, Ivo Haanstra, 2001, ISBN 9781840004298
Sowerby's Ellison Glass Works Vols. 1 & 2, Glen and Stephen Thistlewood, 2005 (on CD)
Sklo Union Art Before Industry, Marcus Newhall
Pamela Wessendorf's Pressed Glass Pavilion website: http://pressglas-pavillon.de/
Pamela Wessendorf's Glas Musterbuch website - http://www.glas-musterbuch.de
Siegmar Geiselberger's Pressglas-Korrespondenz website - http://www.pressglas-korrespondenz.de/
Angela Bowey's Glass Message Board http://www.glassmessages.com
Inchicore Pressed Glass Works Private Museum http://www.inchicore-pressedglass-museum.org/
Note: new sources will be added as used, so please check back for updates