The Private Mailing Card Era marks the beginning of privately printed postcards in the United States. Prior to May 19, 1898,
only government-issued postal cards were allowed.
The Act of Congress that year permitted private cards, but with strict rules—no messages on the address side.
Key Characteristics:
- Card size: Often smaller than later standards (typically around 3¼ × 5½ inches).
- Front: Image or illustration with space for message; no address allowed on back.
- Back: Undivided; designated “for address only.” Frequently includes text like “Private Mailing Card,” “Authorized by Act of Congress of May 19, 1898,” or “Private Mail Card.”
- Paper: Light cardstock, often cream, buff, or gray.
- Printing: Mostly illustrations; real photos are rare in this early period.
Dating Tips:
- Must include the congressional authorization phrase to confirm authenticity and era.
- Absence of “Post Card” wording (that comes later).
- Postmarks, when present, should be 1898–1901.
- These cards are scarce; reproductions sometimes lack the exact required text.

