The nearby little log cabin, known as the Speed Cabin, it much humbler in size and appearance, but has just as significant of a history. The cabin was built in Crawfordsville in 1834 by John Allen Speed, a Scottish immigrant, for his wife and their children. Speed was a stonecutter that had traveled for work from Scotland to Norfolk, Washington D.C., and, finally, Indiana. He found prosperity in Indiana and, after gaining success as a marble dealer, was elected mayor of Crawfordsville. The Speeds, a radical Whig political family, were an influential part of the town's abolitionist circle and were conductors for the Underground Railroad.
In the 1930s both the Henry S. Lane House and the Speed Cabin were turned into museum, and the Lane mansion was listed on the National Register of Historic Places in 1981. The mansion has been restored to its original pre-Civil War look and, according to the Montgomery County Historical Society, ninety-five percent of the furnishings in the house belonged to the Lanes. Along with being the home of the county's historical society, the mansion is also home to the Strawberry Festival, which is held in early June. There is also a gift shop that is run by the Montgomery County Historical Society at the museum, but items from the shop are available by mail.