David Harper.
He's not famous today, but was a very recognizable child actor during the 1970's.
A few older CWT members may remember the long running CBS series " The Waltons ".
Harper portrayed the youngest Walton son ... "Jim-Bob ".
He's always been a big Civil War enthusiast/amateur historian.
To paraphrase actress Judy Norton, that played the eldest sister "Mary Ellen " :
(Harper would explain details of various CW battles to his fellow cast mates when they were attending school on the Hollywood set . Then as now, the kids didn't care, but the Civil War was still being taught in schools back in the 70's).
Ms. Norton also said the Civil War assignments were difficult & boring, but David Harper "brought that era to life. Even as a little kid, he knew more than our teacher".