Those who have been involved in genealogy for more than a few years will be sorry to learn of the passing of Canadian Gravemarker Gallery founder Murray Pletsch on 18 February.
He was a pioneer in systematically photographing gravestones and placing them online. See an early example via the Internet Archive here.
His obit is at https://martynfh.com/tribute/details/12805/Murray-Pletsch/obituary.html