I just came across this:
That’s, from the front, Mizell, Debbie, 19 year old Duce, Eagle, Pepsie, Dopey, Robin, Shorty and Twister. At one time Shorty was a pack mule, but he kept falling down. That’s U-No-Hoo third from the back. We went down about 1000 feet then back up. I gained a lot of respect for mules that day.