As part of the requirements for graduate level degrees, students must complete a thesis for a Master's degree and/or dissertation for a Ph.D. Dissertations and theses are submitted to the academic department and the Graduate College and are made available through the University Library. Since 2010, all theses and dissertations are electronically deposited into IDEALS, the Illinois Digital Environment for Access to Learning and Scholarship, the University's open repository of scholarly content.

ProQuest Dissertations is a comprehensive collection of citations to dissertations and theses worldwide from 1861 to the present day. Full text PDFs are available for many Ph.D. dissertations added since 1997 and some older graduate works.

Prior to 2010, print format dissertations and theses were bound and cataloged separately for the Grainger Engineering Library. Prior to 1983, each thesis was shelved by a call number assigned by subject headings. To locate them, search the online catalog for the author’s last name, title word(s) if known, and “theses” and the year granted as subject term(s).

Astronomy dissertations and theses granted from 1985 to 1999 were assigned Q.629.1Ta, followed by the 2-number year, followed by starting letters from the author’s last name. (Example: A 1991 thesis by M. Doyle would be Q.629.1Ta91D). Dissertations and theses granted from 2000 to present were assigned Q.629.1Tb, followed by the 2-number year, followed by starting letters from the author’s last name. (Example: A 2006 thesis by H. Dewey would be Q.629.1Tb06De).

Astronomy - Q. 530T