Lowe, Victor.  “Peirce and Whitehead as Metaphysicians" In Studies In the Philosophy of Charles Sanders Peirce. E. Moore and R. Robin Eds., Amherst: Univ of Mass Pr, 1964: 430-454.

Abstractz: 

The author compares their conceptions of metaphysics and its method.  Both men seek relational structures; in other respects they are far apart.  Peirce has no place for a single most general discipline, but seeks metaphysical laws founded on those of logic, phenomenology, and mathematics.  He attacks metaphysical problems in a piecemeal; for Whitehead there are no detachable problems.  Peirce also makes the mistake of keeping religion and "vitally important topics" out of metaphysics.  In conclusion, the author adapts Peirce's categories to sketch the idea (which also uses Whitehead) that a metaphysical system requires at least three kinds of entities: qualities, connectors, and synthesizers.  [Abstract from The Philosopher’s Index]