As Esther van Heerden she jumped on 29 March 1941 in Stellenbosch 1.66 meters high. This performance was, however, until 1976 officially recognized as a world record in the high jump. Because Dora Ratjen had jumped 1.70 meters in 1938 higher. The world record of Ratjen but had to be removed later because Ratjen was a man.
At the 1952 Olympics in Helsinki, it occurred to Esther in the discus throw, retired from there but in qualifying. In the high jump, she won with 1.67 meters Olympic gold before the Briton Sheila Lerwill, which had previously increased in 1.72 -meter to existing since 1943 world record of Fanny blanker - Koen by one centimeter.
- Volker Kluge: Summer Olympic Games, the Chronicle II, Berlin 1998 ISBN 3-328-00740-7
- Ekkehard to Megede: The Modern Olympic Century 1896-1996 Track and Fields Athletics, Berlin 1999, published via German Society for Athletics documentation eV