A Navajo regional rug, second quarter of the 20th

A Navajo regional rug, second quarter of the 20th century. Lorenzo Hubbell's trading post at Ganado, woven of native handspun wool with aniline dye, with a central stylized diamond element in red and ivory with hooked stepped devices flanked at each corner by a stepped element in black and ivory against a natural gray field all enclosed within an intricate positive/negative stepped border of ivory and black; 95 x 64 ½ inches