The latest VSS circular informed us that the archives are available on-line so I took a look.
I love this introduction to Circular 12 from June 1972:
Introduction:We deeply regret the delay since the last Circular. A few copies of Circulars 1 – 11, issued by Dr Felix de Roy between 1922 and 1935, are still available to members who send a stamped addressed envelope of at least26cm x 16cm to the Acting Director. Only the first few applicants will receive complete sets.