Letter from A S [Arthur Stanley] Eddington, Observatory, Cambridge, to [Joseph] Larmor The academic year is notable because two mathematics professors reach their 70th birthdays. The Faculty think this should be celebrated with a dinner in honour of Larmor and [Ernest William] Hobson. He gives the location and date of the men-only event. As part of the organising committee, Eddington asks if the date would be convenient for Larmor. 21 April 1927