GLASS                                     SPECTRUM                                 www.spectrumglass.com

                                                ARMSTRONG                               www.armstrongglass.com

                                                WISSMACH                                  www.wissmachglass.com

                                                FLOAT GLASS                             en.wikipedia.org/wiki/Float_glass

LEAD FREE SOLDER               STRENGTH COMPARISON          Solder Strength

                                                DANGERS OFLEAD                  www.osh.net/articles/archive/osh_basics_2001_may26.htm

CONSTRUCTION                      TIFFANY PROCESS                    en.wikipedia.org/wiki/Tiffany_glass

                                               LEAD CAME PROCESS          en.wikipedia.org/wiki/Lead_came_and_copper_foil_glasswork

                                                FUSING PROCESS                     www.glassviewnews.com/manuals/details.php?id=66

STAINED GLASS HISTORY                                                         www.stainedglass.org/html/SGAAhistorySG.htm

INTERNATIONAL GUILD OF GLASS ARTISTS                               www.igga.com