The papers form a full collection for all periods of Parker's service. There are official and private logs, 1794 to 1811, 1827 to 1834 and 1841 to 1852; official letterbooks, 1799 to 1834, and order books, 1795 to 1834, 1841 to 1857, and loose papers relating to his commands. Parker's personal papers include official service documents, his letters home, and his correspondence which includes letters from Sir James Graham (1792-1861), 1831-1845, Admiral Sir Thomas Hardy (1769-1839), 1831 to 1834, Gilbert Elliot, 2nd Earl of Minto (q.v.) 184l to 1848, and Admiral Sir Edmund Lyons (1790-1858), 1845 to 1854. There is a log of a Spanish ship captured by Parker in 1794 and a register of lading of Nuestra Senora de la Esperanza, captured in 1804. The collection also contains letters written to Dr Andrew Baird (q.v.) by Earl St. Vincent (q.v.). The final section, loaned in 1974, consists of two series of letters. The first consists of those received by Earl St. Vincent, 1791 to 1821, and includes some from Lord Nelson (q.v.), 1796 to 1804, and the second, letters to Parker, including Nelson letters, 1803 to 1805.