Color Guard complete with their Henry Rifles. This site states that the mascot was named"Jefferson Davis" as you mentioned. https://www.werelate.org/wiki/7th_Illinois_Infantry_(Civil_War)I'm looking forward to learning more about this photo, which appears earlier in this thread (and has been popular on Pinterest). Recently I ran across a FB post dated 2019 by a Wyoming historian who said a researcher colleague has identified the dog as Jefferson Davis, the regiment's mascot during 1864 and 1865. The post indicated the researcher plans to eventually publish something about the 7th Illinois and its dog. I'll keep an eye out for this. In the meantime, here is a link to a wonderfully colorized version of this picture, which was published by the British newspaper the Daily Mail on its website.
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