This image shows a Navajo family posing in front of their traditional domestic building, called a hogan. They started as simple mud and stick structures and evolved in the last century into much more formal and geometric buildings.
The description states:
26 — NAVAJO INDIANS ON RESRVATION
There are approximately 40,000 Navajo Indians occupying a Reservation of about 9,000,000 acres in No. Arizona and New Mexico. They are self supporting and derive their living from marketing cattle, sheep, wool and hides.
Navajo rugs woven by the squaws are famed for their beauty and durability. Silver jewelry hand hammered from Mexican pesos by Navajo silversmiths is very much in demand an highly prized.
–The reuse of Mexican coinage for the silver it contained has been abandoned with the debasement of the coinage during the 20th century. Silver and turquoise jewelry is still widely produced along with the hand woven rugs.
This card likely dates from the 1940s.