DescriptionPostal cachet: Hoboken "The Mile Square City" Greets the U.S. Fleet. Educational & Industrial Center. Seaport & Railroad Terminus. Sponsored by Hoboken Businessmen's Association. Cancellation mark of U.S.S. Detroit, June 1934. 3-5/8" high x 6-1/2" wide. Envelope holds a postcard of the Meyer's Hotel, Hoboken, which has adhered to flap adhesive; not removed.