The Blazon of Episcopacy Rev. W.K. Riland Bedford 1858 Larman Bequest Dc255
 Warren's Book (Ed. 1911 by A.W.W.Dale)
 Crawley's book (1975)
 An Alphabetical Dictionary of Coats of Arms John W. Papworth. Larman Bequest Dc419-20
 History of Norfolk F. Blomefield
 General Armoury.
For general reading on heraldry Heraldica is a good start. CUH&GS is the Cambridge University Heraldic and Genealogical Society.
Trinity Hall has a web site which contains a brief history.