Oxford

Queen's College, High Street, Oxford.
Postmarked Oxford 28 July 1939. The message reads:
"Interesting week continues, lectures very good, swim at 9 a.m. today, tennis on Balliol grounds. Want to travel to Swansea right through by bus Sat leaving 2:15. Don't lock the door please. Love Mildred."
I wonder what summer courses Oxford were running in the summer of 1939, just before the Second World War started..