Three views by O’Sullivan published by Gardner, all with his 1864 copyright, and with further credit to his agents Philp and Solomons.
No. 762, “Destruction of Railroad Bridge Across the North Anna, 25th May, 1864.” This seems to have been photographed while the bridge was being destroyed.
No. 763, “Pontoon Bridge on North Anna, Below Railroad Bridge, Where Portion of the 2nd Corps under Gen. Hancock, Crossed 23 May, 1864.” This is a good view of the group of soldiers. The bridge may be vaguely seen in the background, or this may be a mis-applied label.
No. 765, “Pontoon Bridge, North Anna, Constructed by the 50th N.Y. V. Engineers, Below Railroad Bridge, Where a Portion of the 2nd Corps, Under Gen. Hancock Crossed, 23d May, 1864.”