In 2007, Arizona artist DAVID TAYLOR began photographing the monuments that mark the border between Mexico and the United States west of the Rio Grande. Aiming to document each of the 276 obelisks installed by the International Boundary Commission following the Mexican-American War, Taylor’s project echoes a visual survey made by the photographer D. R. Payne between 1891 and 1895. While many people have photographed the border, there has been no complete documentation of the monuments in more than 100 years. This volume combines his complete series with texts by curator Claire C. Carter, writer William L. Fox, cultural geographer Daniel Arreola, and an interview with curator Rebecca Senf. Taylor’s extensive notes on the monuments are also included. In the wake of immigration debates, the drug war and a post-9/11 security climate, the project frames the obelisks as witness to a shifting national identity as expressed through an altered physical terrain.