We are history buffs from New Jersey and want to visit Lincoln sites in Springfield, Il. What is the best way to get there (fly, bus, Amtrak)? Where is a good place to stay? Is there a tourist pass for the sites? Any sites I should avoid ? Is one week enough time to see it all? Should I rent a car or depend on taxi? Where can I go to get the best info? Thanks to you all for any and all info.