The first U.S. postal card was issued in 1873. Prepaid postal cards were a precursor to private mailing cards and later, postcards. These four Chattanooga examples have customer credit or billing statements printed on the verso.
The first example below is from Carter-McGill Hardware Co., and is dated September 17, 1891. The second is from Trotter Bros. Wholesale Groceries and Notions, and is dated June 18, 1902.
UPDATED: 7/22/15
Third example is from Tom Fritts Hardware Company, and is dated January 6, 1894. The last example is from Biese Dickinson and Blair, and is dated June 20, 1893.
Source: Acquired
