Not exactly receipts, but I found some old cancelled checks while cleaning out a filing cabinet.
Here we have a check endorsement from the original software running on the IBM 3680 store system in Ames #80. The second image has two endorsements from two different Hills store, one running the IBM 3680 store system, the other running the NCR 255 point of sale system. The Hills check with the purple endorsement was from store #66 in Jamestown, N.Y.