This is Edmund Reinhardt’s membership card in the Society for the Protection of Birds (Bund für Vogelschutz) from 1920. Edmund was the brother of Max Reinhardt, the famous Austrian theater and film director. This membership card is from the Max Reinhardt Archives.
The Max Reinhardt Archives and Library can be found in Special Collections located on the second floor of the Glenn G. Bartle Library (off of the North Reading Room).