The Texas General Land Office sells research guides highlighting Spanish and Mexican land grants in South Texas and catalogues for the Spanish Collections.
Research tips when visiting the Texas General Land Office Archives:
Reminder: Check Online First!
More than two million of the 35 million documents that are in the Archives and Records of the Texas General Land Office have been scanned and are available online and in full-color PDF format, available for download for free. Almost all maps are available for viewing online, many of them with zooming capability to examine detail.
Additional Texas History Resources