After the original use of Iowa State University, Iowa State should routinely be used (unless, according to the Office of University Marketing, Iowa State University Extension is the subject, in which case subsequent references should be ISU Extension). Also, in reference to the Big 12 Conference, it should be referred to in just that way the first time, but subsequent references should be Big 12 (never Roman numerals—that’s reserved for the official conference logo only—or spelled out).
Regarding subsequent references to peoples’ names and titles, use the last name only. If, however, the second reference is cited quite a bit below the original location (and there is reference to another person in between), go ahead and use both (e.g., Professor Sanborn) for clarity.
