The eleven boxes contain biographical entries for the Dictionary of Members of Parliament, arranged in alphabetical order of surname, as follows:
- I (Eng MS 296): Abarow to Ayscough, 262 folios;
- II (Eng MS 297): Baber to Booth (George), 350 folios;
- III (Eng MS 298): Booth (Henry) to Bythell, 399 folios;
- IV (Eng MS 299): Cabell to Cyrde, 317 folios;
- V (Eng MS 300): Dabridgecourt to Eyton, 289 folios;
- VI (Eng MS 301): Fagge to Fyrell, 299 folios;
- VII (Eng MS 302): Gage to Gynns, 407 folios;
- VIII (Eng MS 303): Hacker to Hewett (William), 369 folios;
- IX (Eng MS 304): Hewett (Sir William) to Hyrne, 360 folios;
- X (Eng MS 305): Ibrican to Kyvet, 310 folios;
- XI (Eng MS 306): Lacon to Love (William), 307 folios.