Austrian Society for Railway History

The Austrian Society for Railway History (Österreichische Gesellschaft für Eisenbahngeschichte) or ÖGEG is an Austrian society that was formed from a group of railway fans, who had got together around 1971 in order to look after working steam locomotives at the Austrian Federal Railway (ÖBB) depot of Linz. The society was established in 1974.

More information on the Wikipedia page

The website, in German, is.