A useful introduction to the jurisdiction that is now Singapore, but was previously the Straits Settlements, then a Crown Colony, and briefly part of the Federation of Malayasia until independence in 1965, can be found at the Institute of Advanced Legal Studies.

Hathi Trust has the 5 volumes of the Laws of the Straits Settlements 1835-1900.

For current legislation, and some repealed acts, see Singapore Statutes Online.