<#nondenom=nondenominated stamps> issued in 1998 with an assigned <#postage> value of 33¢.

the labor-intensive process of making the earliest <#coil=coils> before the introduction of a mechanical process.  See also <#autowound>.

the Antarctic base of Admiral Richard Byrd that was home to a special post office, for which <#scott=Scott> 733, the “Little America Issue", was released in 1933.  <#cover=Covers> bear a Little America <#postmark>.

a coin operated, self-service <#pitneybowes-gen=Pitney Bowes> machine that imprinted a <#meter=meter> and retained mail for collection.  It was primarily used in the 1940s.

nickname for <#airmail=airmail stamps> of 1926-1927 (<#scott=Scott> C7-C9) that include a map in their <#design=design>.