There is a website http://www.nas.gov.sg/archivesonline/ that has historical records, maps, photographs, etc. You can search for historical documents, photos, newsreels, etc.
And sometimes you find the most unexpected things.
I recall seeing a photograph, some time back, that had a scene under a coconut tree on one of the islands of Singapore, and I wanted to reference that photo. I thought, "coconut" might be a good search term, 'cos how many people will include the coconut tree in the name of the photo right?
How wrong I was!