The Changing Face of America: Tucson, Arizona Oral historian and short story writer Patricia Preciado Martin comments on the superficial interest now being given to all things Mexican in her hometown. She notes that at one time there was a huge barrio in downtown that was removed in the 1960s as a blight. Now the remaining adobe homes are being snatched up by young, urban professionals. (7:30) MUSIC FOLLOWING PIECE: from the CD "The Best of Strange Cargos" by William Orbit, cut 5, "Via Caliente". copyright 1996, IRA Records.