Book titled 'Tijuana, Senderos en el Tiempo' (Trails in Time) containing photos and text describing the history of Tijuana. This was published by the City of Tijuana in 2006 with coordination by Mayor Jorge Hank Rhon, Mario Oriz Villacorta Lacave, Historian, and Manuel Acuna Borbolla, Editor. The prologue was written by David Pinera Ramirez, a lawyer, writer and historian specializing in Baja California and the history of the Mexico-US border. This was donated by the City of Tijuana, a San Diego Sister City since 1993.