I was about to mention, there was supposedly a set of storms in the 1940s some time where SoMD got like 40" of snow over the duration of them and a lot more than DC. Maybe it was that time period?
Doug hill used to live near me, met him a few times at local charity events. Nice guy, I have pics of me and him somewhere. I think he moved to NC when he retired, but passed away a couple years ago iirc.