Santa Fe, NM – Today, New Mexico MainStreet (NMMS) and the New Mexico Historic Preservation Division (HPD) announced that Gallup’s original commercial area is New Mexico’s newest National Register historic district. The roughly 12-block area has the largest concentration of historic commercial historic buildings in Gallup and speaks to the city’s roots in Native American and Route 66 cultures, coal mining and the arrival of the Atlantic & Pacific Railroad in 1881.