This post was suggested by a recent American Mathematical Society essay:
“My goal here is to make the results of one such collaboration,
by Branko Grünbaum (1929-2018) and Geoffrey Shephard (1927-2016)
in the area of discrete geometry more widely known.”
Grünbaum reportedly died on Sept. 14, 2018 — Holy Cross Day.
As for Shephard . . .