OR Atlas Plate 61-10, Position, Left Wing, 16th Army Corps, Resaca, GA. May 14th, 15th and 16th 1864 Accompanying report of Maj. Gen. G. M. Dodge, U. S. Army, Series, 1, Vol XXXVIII Part 3, Page 388

It depicts Rebel Sharp-Shooters just South of the Oostenaula River

Narrows the search somewhat!

……..

“The Sixty-sixth Regt. Indiana Infantry . . . was ordered forward to dislodge the enemy, then occupying the south bank of the Oostenaula River.”
http://civilwartalk.com/threads/the-66th-indiana-capture-a-flag-at-lays-ferry-battle-of-resaca.88193/