Okay folks, the next installment is up.
March 1999 can be found at:

home.gwi.net/~moxie1/Clues/letterbox-usa-history-1999-2.html

Since I don't want to flood the list with
these announcements, I will no longer be
posting every new installment, so if you are
interested in future installments, stay tuned to:

home.gwi.net/~moxie1/Clues/latest.htm

or, to link to the series index, use:

home.gwi.net/~moxie1/Clues/letterbox-usa-history.html

Again, thanks for all of the positive feedback
that I've been getting, and I hope you all continue
to enjoy the series.

-Isosceles