TOM WALKER wrote in a message to ROY J. TELLASON:

RJT> TW>  I must have mistated my Question. I am Fimilat with
"AA" matteries
RJT> TW> and  "AAA" battereis but don't recal the
"A" designation for MANY
RJT> TW> years and  was unaware they were even still being manfactured.

RJT>I don't remember ever actually seeing an "A" battery designated as
RJT>such in terms of a specific size,  mostly they were designated that 
RJT>way because of their use (filament/heater current) along with "B" 
RJT>(plate voltage) and "C" (bias) back when.

TW> That was my Point, Perhaps being a little picky but hrtew "A"
TW> battery only existed as it applied to the Old Vucuum Tube Filiment
TW> Batteries.  NIOT as an individual Cell like the "AA" and
"AAA"

There must've been an "A" cell at some point,  or the system
wouldn't make any sense...

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