Restored profile drawing of a klepsydra, showing two water clocks in action ... Piet de Jong ... Exhibited at the Benaki Museum, 15 November 2006 to 7 January 2007. VII-17 VII-17
Restored klepsydra with inscription (water color) ... Piet de Jong ... Stored with de Jong paintings. Exhibited at the Benaki Museum, 15 November 2006 to 7 January 2007. IX-93 IX-93
