Quoted from an email originally sent to: The Thinker
The author writes:
Are we really so forgetful that I have to keep specifying Don Hollister's profession in every single panel he appears in?* **
* Though it was only once every third panel he was in during the (mercifully) now concluded "The Great Kilberton Porcelain Duck Conspiracy" storyline.
** Compare and contrast with the Head Librarian, whom I'm pretty sure has never been given an actual proper name in any of his appearances, nor will he for that matter.