Northamptonshire collections, among which are: P. 5. A copy of a survey of the river Nen from Northampton to Peterborough, 1606 P. 15. Names of barons and knights in about 1190-1415, collected from the Fees and Scutage Rolls P. 49. Lists of the sheriffs of the county, 1155-1642 P. 61. Arms and pedigrees of county families, chiefly from MSS. belonging to…