Given this lead I have also found a report of the second circulation in the January 1939 edition with J.H.L.Adams as the guest showing International tennis stars in action. The second folio included members prints using a diversity of lenses. Two Telyt shots,two 35mm wide angles and one with the 28mm Hektor joined the more usual 50mm and 90mm work. Members were still sought, as they are today, 78 years on, but we have relaxed the requirement for home processing although it is interesting that all present members in 2017 process at home.
Finally in what is rather a domestic Blog I have an illustration of a circulating folio in 1938 which is obviously of a 4x3 inch Circle,this small size having been dropped from the present day range of options.