You might check over on Yahoo's "Revlist" (Historian and Reenactor site for the War of the American Rebellion). Put "Paul Pace" in your "title" for the post and you'll get one of the 42nd's most informed historians.

Many of the folks there have specific first person documentation on orders, uniform issues, supplies, and equipment modifications with which they address their portrayals for various events. Nothing like reading the original order and shipping forms to get answers to equippage.

Jim aka kiltiemon