Do i need a Canadian Visa from USA If I have Travel Documents?

I have travelling documents from the USA that allow me to travel, would i need a visa to go to Canada or not?

If you are entering the country to be a tourist, then all you need is a valid proof of citizenship (i.e. a birth certificate or passport) and a valid picture ID (i.e. a driver's licence or a passport). Remember, though ... you're going to REQUIRE a passport as of 01 January 2007. The birth certificate/driver's licence will no longer be acceptable.

If you are entering to either study at one of the schools or to work, then you WILL need the correct visa to do so.

If you are an American Citizen you won't have a problem, just show your passport, if you are from another country, then look at this site, as it tells you if you need a visitors visa.
http://www.cic.gc.ca/english/visit/visas.html