The German writer and pianist, who was also known under the pseudonyms Dr. P. van Noorden and Dr. E. Gerhard, wrote several papers on dance, Ballett gestern und heute (Berlin 1957), Tanz der Völker (Berlin 1972) and Die Tanzkunst Indiens (Berlin 1981) among them.
His collection contains documents, papers, correspondence, programmes, articles, magazines and photographs.