Chanced upon this site while I was doing research on the second installment of The Many Places of Singapura. Sejarah Indonesia: An online timeline of Indonesian History is just that – a timeline from AD 100 to 1500. This timeline nicely sums up what is known about the ancient history of Indonesia, and is useful as a quick-reference tool.
Sejarah Indonesia: Beginnings to 1500: The Old Kingdoms and the Coming of Islam
– Early Kingdoms of the Indonesian Archipelago and the Malay Peninsula by P. M. Munoz
– Ancient History (The Indonesian Heritage Series) by Indonesian Heritage