K&L Soaring Support for all Schweizer sailplanes including 1-19’s, 1-23’s, etc.
Alleberg Glider Museum (Sweden)
Swedish Veterans Sailplane Group
Swiss Vintage Glider Association
Vintage Glider Club of the Netherlands
Vintage and Classic Glider Club of NZ
Alexander Schleicher. Under “Galerie” is a listing of Schleicher gliders up to 1945 and since 1951.
Schempp-Hirth. The Company /History section includes details and photos of the company and its gliders.
Air&Space Smithsonian Magazine Vintage Charmers http://www.airspacemag.com/history-of-flight/vintage-charmers-7536424/
Scale models
RC Soaring Digest – archive through 2018
The new RC Soaring Digest