Not sure if this helps, but this is the label from a early Chicago Pennant Co. Carleton College banner circa teens or twenties. It actually has a leather college seal sewn to the banner.
Zip Codes were introduced in 1963; I believe the postal codes included in the addresses (ie Chicago 30, Illinois) were begun in the 1940s. The term "rayon" wasn't used until 1924 and I don't think the government required fabric content labeling until the early sixties. I think the LSU banner dates to the early sixties.
