This resource guide was revised and updated by Patricia LaCaille John December 2004. Rural Information Center Publication Series; no. 62 2004. Beltsville, MD. This document was modified January, 2015. Historic Preservation Resources provides web links to more than fifty full-text "how to" information guides and manuals on general and technical aspects of historic preservation. It includes web links to specialty resources on historic barns, farms, bridges, schools, battlefields, landscapes, lighthouses, interiors, exteriors, preservation techniques, and other facts of historic preservation.