HRA Gray & Pape, LLC is one of the few consulting firms specializing in cultural resources management (CRM) and historic preservation services on a national basis. Centered in Houston, Texas and with offices across the country, we offer a full range of historical research, historical interpretation, and archaeological services, helping our clients to comply with Section 106 and Section 110 of the National Historic Preservation Act (NHPA) requirements, and to meet regulations for historic preservation reports, including National Register nominations.