Photograph of the Mission San Xavier del Bac, Tucson, Arizona, ca.1900, the "White Dove of the Desert". Two towers flank the main entrance. The one on the left is whiter than the one on the right and has a dome and a cross on top unlike the one on the right. Behind part of the main dome on the church is visible. The surrounding land is barren. No people are in the image. (Source: California Historical Society, California Historical Society Collection, 1860-1960, Title Insurance and Trust, and C.C. Pierce Photography Collection, 1860-1960, published by the University of Southern California Libraries (Public Domain photograph).