[CW] Origin of 'ES'?

[N2EY@aol.com]

In a message dated 7/25/02 6:38:17 PM Eastern Daylight Time, 
googlyelmo@earthlink.net writes:

> Does anyone know the origin of using 'ES' for 'and' in CW? 

As others have noted, "es" is actually a "continetalization" of the American 
Morse for "&".

And "&" is not alone. At least one other American Morse symbols made their 
way into common radio use:

The ending signal "VA" (didididahdidah) is actually a corruption of the 
American Morse for the number "30" (didididahdit daaaah). "30" is a Phillips 
abbreviation for "end of work".

Any others?

73 (another Phillips abbreviation) de Jim, N2EY