Croton-on-Hudson Gets Hyphenated, April 1, 1948

Sixty-nine years before the publication date, on April 1, 1948, the U.S. Postal Service officially incorporated hyphens into the cancellation stamp for what had previously been called "Croton on Hudson." This transition is documented through a pair of commemorative envelopes known as "last/first covers," which were inscribed by Augustus W. Dymes, Jr., who served as the local postmaster and was the uncle of Dorothy Pezanowski, the village's current historian.

In philatelic terminology, a cachet

Date: Various Source: crotonhistory.org — https://crotonhistory.org/2017/03/31/croton-on-hudson-gets-hyphenated/ License: Used with attribution; consult crotonhistory.org for permissions