"greengrocer's apostrophe" (was Re: Cam(pb)ell)

[Kim & Rima McKinzey]

re the names for the people-

As a kid, the grocery store sold staples - like flour/canned
goods/etc.  My mother might say (after sending me on an errand) "Ask
the grocer...

Other comestibles were purchased separately.  The butcher sold meat
(Ask the butcher for...).  However, while we would go to the fish
market and the produce stand - I have no recollection at all of what
those proprietors were called.  Maybe my mother never had me ask them
questions?

Rima