After having been let go from ENMU during the university's financial crisis in 1977, Williamson spent some time concentrating on his writing, but after being named Professor Emeritus by ENMU, he was coaxed back to co-teach two evening classes, "Creative Writing" and "Fantasy and Science Fiction" (he pioneered the latter at ENMU during his full-time professorship days). Williamson continued to co-teach these two classes into the 21st century. After he made a large donation of original manuscripts and rare books from his personal collection to the ENMU library, a special collections area was created to house these and it was named the "Jack Williamson Special Collection".