Collections made and partly written by dr. Charles Mason for Cambridgeshire. An account of the bps. of Ely to 1599, partly from printed sources: followed by lists of the founders, benefactors, etc. of Cambridge colleges (fol. 17), and of religious houses in Cambridgeshire (fol. 25b) and Huntingdonshire (fol. 26), etc. A list of contents is at fol. 29.