I found this great website for antique pictures. Many are rare or unknown. This one is of unknown soldiers taken in the 1860s. This is owned by a couple from Pennsylvania. Remarkable photo. The first thing I noticed was the light tone of their uniforms and the clean shaven faces. Who are they?

http://www.iphotocentral.com/search/detail.php/9/0/1860/1869/0/348/50/2408/1
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David Upton