The early sketch books are a kind of visual record of my preoccupations. In 1958 I went on the first Aldermaston March, not all the way. I did the last leg to London. I did this drawing in Hyde Park when people were foot sore and weary but there was the sort of togetherness that bonds people in a common effort.
On a technical note I was using a ‘must have’ Pentel Pen on a layout pad. They were invented in the early 50’s , I think they were the first (or at least one of the first) fibre tipped pens. They had quite a wide tip, very black ink, and smelt strange of some kind of spirit (I wouldn’t have been surprised if you could get high on it!) It encouraged you to be bold in your drawing.