Soesilo is a student of Thomas Karsten, a Dutch engineer who gave major contributions to architecture and town planning in Indonesia during the colonial era.
He was a town planning consultant for Semarang (1916–20, 1936), Buitenzorg (now 'Bogor') (1920–23), Madiun (1929), Malang (1930–35), Batavia (Jakarta) (1936–37), Magelang (1937–38), Bandung (1941), as well as Cirebon, Meester Cornelis (part of Jakarta which is known as Jatinegara), Yogyakarta, Surakarta, Purwokerto, Padang, Medan and Banjarmasin.
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