Thanks to all those other people who I did not answer directly !!
A wealth of information was obtained on the round vs square hole question.
I will try to post a generic list of information here later.
Thanks Again !!
>From Garry R. Shapiro" <firstname.lastname@example.org Fri Jul 22 21:21:00 1994
From: Garry R. Shapiro" <email@example.com (Garry R. Shapiro)
Subject: A DX CONTESTERS CONTEST
I have become alarmed at the number of stations, large and small, that
call CQ with 90% occupancy rate because all they need do is press the
play button on the Ventriloquist/DVP/Parrot/Voice Keyer.
The above is a quote from Peter Jennings, AB6WM, also known as the
marketer--not quite the creator--of Frankenstein's Monster: the
Ventriloquist voice keyer. Sorry, Peter old chum, I could not quite
pass on sharing the irony...(Of course, I own an use a DVP, which
with a shack next to the master bedroom, has so far saved my marriage
during ssb contests....barely.)
Garry, NI6T (firstname.lastname@example.org)