In 2004, well after Ong's death in 1992, his family decided to donate the insect specimens and processed goods to the National Museum of Natural Science, as many as 100,000 items in all, the largest private donation of Lepidoptera specimens to the museum.
王生鏗 1992 年過世後，2004 年家族成員決定將昆蟲標本及相關加工用品捐贈給科博館，至今累計高達 10 萬件，為該館成立以來最大宗的私人鱗翅目標本捐贈。