CONSTRUCTION HISTORY.........recently someone suggested that this publication and organization might be of interest to people involved in stained glass, especially the history of, and history of faceted glass/dalle de verre. http://www.constructionhistorysociety.org/
The first publication I received discussed in great detail two articles about the construction of cathedrals, ...i.e. placing the keystone of a vault, and how Trinity College/Cambridge was designed.
There will be a conference in Texas in late May that might interest those who live closer.