Authors Who Kept Their Day Jobs

We all know about the non-writing day jobs authors have had to shoulder in order to keep writing.  But none of those authors kept their jobs after they made it big–why would Steinbeck keep giving tours of a fish hatchery after writing The Grapes of Wrath? However, there are some authors out there who kept their honest work for the duration of their careers, either because of calling or (in one case) necessity.  Here are the authors who never quit their day jobs.