Setiadi Sopandi studied the thousands of documents in Friedrich Silaban's archive for 10 years. He visited the late architect's home on Jalan Arsitek F. Silaban- a street named after him- in Bogor, West Java, on a regular basis to scrutinize each of the documents individually, from Silaban's sketches and building designs to his collection of photographs and correspondence.

The family gave him access to the archive, inspiring him to later write Sil