Nope, no bill of sale, no way to contact old owners. Once I get it running again (just put a new used top end on it, need to coat the gas tank, need a new chain, need to finish fixing the shocks) I'll call the DMV and see about titling it. I've actually looked at their website, and the only thing I found was that if you put in a claim and wait 3 years (in case it's reported stolen), you can then get a title. In three years this thing will be residing in a scrap heap...