It seems reasonable to believe that Index is a full representation of the ledger's contents, if only just for practical purposes...they used it regularly and needed to get to pages quickly. A hidden "Coupon" or Polar Bear page just seems unlikely given all of the other brands' representation.
If that's the case then figuring out where these two brands were printed becomes the fun historical hunt. I hadn't seen this posted yet, so I thought I'd share. Everyone knows Knapp and ATC printed everything, here is a direct connection to the Coupon's W.R. Irby New Orleans branch, which I hadn't seen before. "The Knapp Co Lith NY"
