It is usually harder to find yankee’s then it is Confederates are most reenactments, anyway, Harrisburg should be able to help you on your quest. Since most of the unit designation is gone, you’ll have to take your best guess. If anyone disputes your decision (Usually its the “Hardcore” guys in their polyester uniforms) have them present their evidence and your quest for the original lettering is over.

The two volume set of “Advance the Colors” by Richard Sauers is out of print and the Capital Preservation Committee sold their last copies about a year or two ago but you should be able to find them on the net.

Happy Trails!
Tom Martin
Confederate-flags.org