One of the two largest ranches in the state, the XIT Ranch in the Texas Panhandle is also larger than the state of Rhode Island.
The XIT Museum in Dalhart features extensive collections related to the ranch and to ranching history. If you’re doing research on the era or area, check out their Digital Archive section.
The ranch has a fascinating history, so this is a museum you’ll definitely want to put on your list if you’re in the area.