Mohammad Yamin was an Indonesian poet, politician, and national hero who played a key role in the writing of the draft preamble to the 1945 constitution.

Liem Koen Hian was an Indonesian journalist and politician. He was born in Banjarmasin, the son of a local peranakan Chinese business owner, Liem Ke An. He attended the Hollands-Chineesche School to class 6, when he was reportedly expelled after coming into conflict with a Dutch teacher. He subsequently worked as a business clerk for Royal Dutch Shell in Balikpapan before returning to Banjarmasin to work for a local newspaper. The name of the newspaper is not known, but may have been Penimbangan, Pengharepan, or Borneo Post.