At this site you can search Federal land conveyance records for the Public Land States, including image access to more than five million Federal land title records issued between 1820 and the present. The site description says: "We also have images related to survey plats and field notes, dating back to 1810. Due to organization of documents in the GLO collection, this site does not currently contain every Federal title record issued for the Public Land States." However, you can search Federal Land Patents, which offer researchers "a source of information on the initial transfer of land titles from the Federal government to individuals. In addition to verifying title transfer, this information will allow the researcher to associate an individual (Patentee, Assignee, Warrantee, Widow, or Heir) with a specific location (Legal Land Description) and time (Issue Date). This site has a variety of Land Patents on the site, including Cash Entry, Homestead and Military Warrant patents." I did a quick search on a distant cousin that I know was involved in the great Oklahoma land rush in the 1860s. His name immediately came up with the date of the land transfer and record of his homestead, including a PDF copy of the original document. This is an important family history find for those families involved in the great US western migration of the 1800s.