Derek Mark Edding said:

Is there anyone who still sharpens this kind of mower's blades in the
Morrisville or Cary vicinity?

I haven't seen an answer yet but you might try sharpening them yourself.
Start with a ******* file and finish with a mill file, would probably only
take about 10 minutes.

Don't let anyone use a generic grinder unless the blades are damaged.
--
McQualude