Yes, please! That Civil War check is quite interesting -- looks like it was kind of an early USO for Union troops. And I always like engraved items, so that Colorado check is very appealing. Keep 'em coming!
I love all those proof checks! Thanks for posting them. The top one has a famous vignette called "The Crossing." You can read more about it here: http://coxrail.blogspot.com/2015/07...rossing.html On the far right, next to the horseman is some extremely tiny microprinting. I'd be curious if it is legible on your copy, if you can scan it at very high resolution (2400 dpi or greater).