American Heritage Trust Act of 1988

American Heritage Trust Act of 1988 - Title I: American Heritage Trust - Establishes the American Heritage Trust, comprised of the Land and Water Conservation Fund and the Historic Preservation Fund, to provide funding for the preservation of America's natural, historical, cultural, and outdoor recreational areas.

Title II: Land and Water Conservation Fund - Amends the Land and Water Conservation Fund Act to require the Secretary of the Treasury to invest a portion of the Land and Water Conservation Fund in public debt securities. Requires that the interest from such investments be used to provide for the preservation of the Nation's recreational areas.

Sets forth a formula for the allocation of such interest income to the Federal Government and the States. Sets forth specified requirements with respect to the apportionment of such income to local and State governments. Repeals a specified section concerning publicity and signing provisions.

Title III: Historic Preservation Fund - Amends the National Historic Preservation Act to extend the Historic Preservation Fund through 2015. Requires the Secretary of the Treasury to invest a portion of such Fund in public debt securities.

Requires that the interest from such investments be used for the preservation of historic sites.

Title IV: Miscellaneous Provisions - Requires the owner of any site that benefits from moneys derived from the American Heritage Trust to install a sign indicating that fact.