- Colum P. Hourihane
International scholarly organization dedicated to the study of medieval Stained glass. Although it is claimed that the organization was founded in 1949, it was not formally established until 1952 when a group of interested scholars met at the International Congress for the History of Art in Amsterdam under the guidance of Hans R. Hahnloser and where guidelines for the recording and cataloguing of stained glass were then structured. Hahnloser had already discussed the possibility of founding such an organization three years earlier at the 16th International Congress for the History of Art in Lisbon when an outline and draft were proposed.
This international project now has branches in 12 countries (Austria, Belgium, Canada, Germany, Great Britain, Italy, the Netherlands, Poland, Spain, Switzerland, and the US) with related committees in Portugal and Russia. Its aims are to record all medieval stained or painted glass, although some committees have also ventured into later periods. Each country has its own national committee that is financially dependent on securing its own funding. Most national committees are run by volunteers. These committees determine the research priorities and usually work in tandem with other organizations. The independent nature of these various committees and their dependency on securing their own finance has meant that the project does not have a uniform level of publication or activity....