Red-haired Etta Stoiber, reputedly an ex-madam and the widow of Edward G. Stoiber, a wealthy silver magnate, built this thirty-room, three-story Italian Renaissance Revival mansion, sometimes called Stoiberhof. Its rough-faced gray stone walls hide such amenities as a basement swimming pool and a barbershop. Rebuffed by snobbish local society, Etta Stoiber constructed a 12-foothigh spite wall of rhyolite around her property and a wrought iron gate at the foot of the entry stairway. This is the largest of several mansions in the Humboldt Street Historic District, which extends from East 10th to East 12th avenue on the west edge of Cheesman Park. The district's twenty-six large houses include Georgian Revival and late nineteenth-century Italianate as well as early twentieth-century eclectic examples, with several notable variations on the four-square type.