I think I knew that the blue regimental was with the packs. The yellow cavalry standards were not adopted until 1886 if I have the date correct. An auction house recently sold one (2nd US Cavalry) and initially had it listed as an ante-bellum flag but Steve Hill and I sent them enough evidence to show that this was a post-bellum flag and that cavalry did not use yellow colors prior to 1886. Steve also corrected the unit's modern lineage for them. It was a really pretty flag.

Greg Biggs