Althorp Papers. Vol. mmdxxvi. List of letters [sent/received?] by Lord Spencer with dates. Some also have a brief idea of content; 1860-1866. 242 x 201 mm.
Althorp Papers. Vol. mmdxxvii. Notebook containing names of applicants to the militia submitted to Lord Spencer as Lord Lieutenant of Northamptonshire; [circa 1879-1896]. 224 x 185 mm.