[JollyElm]

Every single person is wrong so far.

Don't hide from it, flaunt it!! The only way to approach this scenario is to dress casually in your normal clothing...perhaps dazzle everyone by donning a t-shirt with Farrah Fawcett in the red bathing suit on it, and a Mets (or your preferred team) hat. Bring Pop Tarts and all sorts of snacks to hand out, and a comfortable chair. Perhaps have some 'Seinfeld' DVDs to give out (since you can't really do much with DVDs anymore). Set yourself up in the most tobacco-est area possible of a town or city and let it be known that you will wow anyone who gives you tobacco cards with fantastic tales of the future.

A second option is to bring with you many thousand-count boxes of 1990 Score cards (only commons, of course, because these 1910 idiots don't know who the stars are/will be) and tell the kiddies, "I will give you 10 incredible futuristic cards for every silly, worthless and 'new' tobacco card you give me."

Word will spread like wildfire, and your only problem will be how in heck do you get back to the time machine with the incredible amount of booty you've scored.