Carl Sandburg Home National Historic Site Boundary Revision Act of 2007 - Authorizes the Secretary of the Interior to acquire from willing sellers not more than 115 acres of land (including any improvements to the land) or interest (including conservation easements) in land contiguous to the Carl Sandburg Home National Historic Site for inclusion in the Site.
Permits up to five acres of such acquired land to be used for: (1) a visitor and education center; and (2) a visitor parking area.
Instructs the Secretary, upon the acquisition of any land or interest in land under this Act, to revise the boundary of the Site to reflect the acquisition. Requires any land acquired under this Act to be administered by the Secretary as part of the Site.