The Free On-line Dictionary of Computing (30 December 2018):

Harvest C

   A C compiler, assembler and linker for the Macintosh by
   Eric W. Sink.  The parts of the system are integrated in a
   single application, which manages a "project" composed by
   several C source files and resource files (which contain
   data).  Version 1.3.

   (ftp://archive.umich.edu/mac/development/languages/).

   (1992-05-26)