In his scholarly Stanley Spencer : Journey to Burghclere (Sansom & Company 2006) Professor Paul Gough lists Stanley's writings held in the Tate Archive as 'eighty-eight lengthy notebooks, thirteen extensive diaries, and over 900 pieces of extended writing.'  There are further writings in the Stanley Spencer Gallery in Cookham, in the Berkshire Record Office, and in family possession.

All his life Stanley enjoyed corresponding with sympathetic friends and patrons, with his dealer Dudley Tooth, his wife Hilda, and members of his own Spencer family. He wrote them long involved letters (frequently covering the same ground) which would help him sort his welter of creative ideas into some form of order. On the whole he found women, with their stronger sense of intuition, to have greater sympathy than men with his more way-out notions.

Doubtless more of his correspondence may yet surface. Sadly, Ian Kellam was just too late to prevent the impulsive Daphne Charlton from burning Stanley's love letters to her, but to their credit most recipients retained their letters from him so carefully that after Stanley's death they were able to offer them to an archive, where today, although still copyright, they form an invaluable source to serious and permitted researchers, and fortuitously provide today's interested reader with an ongoing summary of his thoughts, activities and plans.

Stanley is estimated to have left some 450 painted canvases and many thousands of drawings.