I continued to catalog electronic dissertations and theses. The theses and dissertations for all majors except composition are treated like an as an electronic book. Composition majors compose a piece of music and submit a score. Therefore, their theses are treated like scores. Because of this, the cataloging process is almost identical to the process of cataloging a physical score. There are simply more fields that show it is an electronic resource and there are fields that provide an online link to the resource itself.
The hardest part about cataloging dissertations and theses, just like books, is assigning them proper subjects, especially when they cover a very wide topic. However, with practice, I feel like I am getting better at correctly assigning appropriate subject headings.