If you do a WorldCat search for subject: John Updike, thesis/dissertation you’ll get 26 pages of entries that are sortable by relevance, author A-Z, etc., and you might recognize quite a few names in this list. As of May 25, 2014, there have been 256 theses/dissertations written about Updike.

Here’s the WorldCat link to the first page. The link has been added to the bibliography in the left menu.

One of the theses—”The protagonists of John Updike,” by Charles Monroe Cock (Spring 1971) is even available as a PDF in full form: The protagonists of John Updike, which makes you wonder how long it will be before everything is available at a keyboard’s touch.