Statistics for occurrence #1 of “Colonel Richard H. Rush” in chapter 1 of The Photographic History of The Civil War: in ten volumes, Thousands of Scenes Photographed 1861-65, with Text by many Special Authorities, Volume 4: The Cavalry:

..., 1861, until May, 1863, when it was discarded for the carbine, as being unsuited to the wooded country of Virginia through which the command operated. The regiment was organized in Philadelphia by Colonel Richard H. Rush , August to October, 1861, and was composed of the best blood in that aristocratic city. The usual armament of Federal volunteer cavalry regiments at the outset of the war consisted of a saber and a...
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