We showed up to springfield in the midst of a record (18") March snow storm.
This snow closed the Lincoln home the day we intended to go as they shoveled out. However we changed our plans and came back the next day and are very glad we did.
Come early as the tours are given in a first come, first served fashion. The home is small so the tour groups are small. They have restored other homes in the are as well and taken down any non period structures. The Park service has done a nice job restoring a few blocks of Lincolns Springfield. Oh, and unlike many national parks, the FREE PRICE is great. Small charge to park.