Publications
The Bulls of Sussex, by L. F. Salzman, F.S.A., published 1922 in Sussex Archæological Collections (vol. 63, article, pp.113-156) accessible at: W.S.R.O. [Lib 2148] & The Keep [LIB/500281] & S.A.S. library View Online
Sir Henrie Bull. A Sussex Priest, by Sir William Bull, published 1928 in Sussex County Magazine (vol. II no. 3, article, pp.125-126) accessible at: W.S.R.O. [Lib 9327] & The Keep [LIB/500138]
A Sussex Hermit: Rev William Bolle, by Sir William Bull, F.S.A., published 1929 in Sussex County Magazine (vol. III no. 12, article, pp.838-841) accessible at: W.S.R.O. [Lib 2307] & The Keep [LIB/500140]
Robert Bull of East Pallant, Chichester, by R. R. Morgan, published January 1986 in West Sussex History, the Journal of West Sussex Archives Society (no. 33, article, p.26) accessible at: W.S.R.O. [Lib 16404/33] & The Keep [LIB/500481]