US Army officer (1832–1910) who fought in the 7th U.S. Cavalry at the Battle of the Little Bighorn under command of Marcus Reno. When DeRudio’s horse was shot from beneath him, he hid in the brush until late at night, and then swam across the Little Big Horn to rejoin his command. Original unsigned oval bust portrait by Barry, approximately 4.5 x 6.5, of an older DeRudio in full dress uniform. Photo bears a “Barry” photographer’s stamp and is housed in its original 7.5 x 10.5 Barry presentation folder. A printed description of DeRudio’s exploits at Little Big Horn are affixed to the reverse of the folder. In fine condition, with some scattered light surface marks, spots, and dings. RR Auction COA.