E. H. Hassell, known as "Harry", was Vice-President of Leicester Secular Society from 1923 to 1938, and President from 1939 to 1948, during what must have been a difficult war-time period. He was also a Trustee of the Leicester Rationalist Trust during this whole period.
A large number of the books in the LSS Library were donated by Hassell or his estate. These are mainly of a literary nature. The photo below, from a dramatic production in the Hall (Hassell is evidently the figure in the barber's chair on the right) indicate that he was involved in organising Social activities of the Society, which were extensive at that time.
The scene is believed to be from a 1930 production of the Beaumarchais comedy The Barber of Seville.
Apart from these photos, and the above dates, very little seems to have been recorded in our archives of Harry Hassell's life or his activities for the Society, even though he was obviously an important figure for 25 years. We would welcome any further information.