UPDATE: Blake points out this is a Mule and not a horse.
Steve forwarded this interesting photo of a mule pulling a Bantam BRC-60 across a river.
“1941 Press Photo Horese-Drawn Jeep across water at Fort Oglethorpe, Georgia. This is an original vintage press photo. Horse-drawn Jeep at Fort Oglethorpe, Georgia.Photo measures 7.75 x 5.75 inches. Photo is dated 03-24-1941.”