Dukes of Cambridge Papers. Letters from Prince Frederick and Princess Caroline of Hesse, the parents-in-law of Adolphus, 1st Duke of Cambridge, to the Duke; 1818-1836. French.
Add MS 88883/1/3-4. Dukes of Cambridge Papers. Correspondence of Adolphus, 1st Duke of Cambridge, and Sir Herbert Taylor (b. 1775, d. 1839), private secretary to William IV; 1830-1836. Two volumes.
Dukes of Cambridge Papers. Correspondence of Adolphus, 1st Duke of Cambridge, and Victor von Prott (b. 1781, d. 1857), Hanoverian soldier and statesman; 1831.
Dukes of Cambridge Papers. Correspondence of Adolphus, 1st Duke of Cambridge, and Ernest, 1st Duke of Cumberland (later King of Hanover) (b. 1771, d. 1851), his brother; 1831-1833.
Dukes of Cambridge Papers. Letters from Prince George, later 2nd Duke of Cambridge, son of Adolphus, 1st Duke of Cambridge, to the Duke; 1831-1841. For Adolphus’s letters to George see Add MS 88883/3/1-8.
Dukes of Cambridge Papers. Correspondence of Adolphus, 1st Duke of Cambridge, and Col. Cornwall, comptroller of Prince George’s household in Gibraltar; 1838-1840. For Prince George’s accounts whilst in Gibraltar see Add MS 88883/3/71-73.