"Chad" isn't going postal

[Bapopik at AOL.COM]

   Congratulations to Jerry for finding that 1944 "chad."
   A friend of mine gave me a "chad" article from LINN'S STAMP NEWS.  I checked philatelic dictionaries in the NYPL.  It's not here.

1911--THE DICTIONARY OF PHILATELIC TERMS AND PHRASES (London).  No "chad."

1922--THE STANDARD PHILATELIC DICTIONARY by W. H. Poole and Willard O. Wylie.  "Chad"--See "Oubangi--Chari--Tchad."

1933--THE STANDARD PHILATELIC DICTIONARY by Willard C. Jackson.  Has "Chad" as "A French colony in Central Africa."

1949--THE AMERICAN STAMP COLLECTOR'S DICTIONARY by Harry M. Konwiser.  No "chad."

1950--STANDARD PHILATELIC DICTIONARY by Vijay Krishna (Barnaras, India).  No "chad."