The Land Tract Files are also called RATC Green Books and contain legal records of lands acquired by NPS after 1978 Congressional funding. These are bound by tract number. Most of these materials are photocopies of legal records documenting land acquisitions, including legal judgments, land ownership histories, foreclosure documents, leases and contracts with gas and electric companies, deeds and trusts, wills and genealogies regarding inheritance rights, land surveys and inspection records, appraisals and environmental assessments, financial documents and insurance certificates, photographs, maps, and correspondence with land owners, attorneys, court clerks, and others.

As most of the documents are photocopies, the dates are based on the originals, not on when the photocopies may have been created. Some of the photocopies are also of poor quality and illegible. Some of the legal documents contain social security numbers, and these bound files are restricted.