The oldest collegiate record, to my knowledge, is University of Vermont long jump, held by Albert Gutterson from the Stockholm Olympics of 1912. The record is 24-11. Obviously, Ted Meredith, as previously mentioned, ran at the same competition, so one would have to find out if the long jump was contested before or after the 800. However, Meredith was still in high school at Mercersburg at the time.
University of Vermont's men's team was cut in 2002 and no longer exists as a varsity sport. The coach laughed because when the women's team (that he started) was formed he used to have to make them sandwiches at home because the university wouldn't give the women's team any meal money. Thank you Title IX. And no its not about football because Vermont has no football team.
Harvard's long jump record, held by Ned Gourdin, is from 1931.
and I have to say it, but the real William Carr still holds the 400 record at the University of Pennsylvania, run in July of 1932. The 46.28 was a world record, and one of the first automatically timed records (although the IAAF ratified it as 46.2). No blocks, and the semi-finals were the same day. During the period in college when Carr ran the 400, he never lost a single race. Carr also attended Mercersburg Academy like Meredith.