Records of Howard de Walden Estates Limited (and its predecessors) comprising:

minutes of General Real Estates Investment and Trust Limited (GREIT), 1919-1953; minutes of the Advisory Board, 1913-1919; Directors' attendance books, 1919-1953; minutes of Howard de Walden Estates Limited (HDWEL) 1953-1965; minutes of the Advisory Board, 1960-1966; attendance books, 1952-1955;

financial records of GREIT including ledgers, 1920-1949; financial journals, 1919-1952; cash books, 1919-1943; petty cash books, 1920-1951; fees book 1913-1950; Register of members and share ledger, with details of mortgages and debentures, 1916-1953; share certificates, 1919-1955; correspondence relating to shares; Register of directors' holding interests, 1948;
financial records of HDWEL including balance sheets and accounts 1953-1963; ledger, 1953-1963; financial journal 1953-1963; cash books, 1953-1963;

records relating to leases including lease book, 1799; registers of leases, 1921-1961; register of settled property, 1922-1951; particulars of assignment of lease 1912-1990; lease receipt book, 1941;

lease plan books and reference plans, c.1800-1960; block plans, c.1920-1940;

Terms of Contract series, 1812-1962; Ground Plan series, 1812-1967; indexes to terms of contract and ground plans, c 1900;

Particulars of licences granted, 1864-1967; Contract books, 1907-1947; GREIT Settled Estate contract books, 1912-1963; Contract register, 1909-1962; Register of seals, 1933-1946; Plans approved, 1924-1958;

maps and plans of the Estate including Survey of Marybone and Barrow Hills in the County of Middlesex, 1708; plan of estate in the parish of St Marylebone belonging to His Grace the Duke of Portland, also of an estate held by lease under the Crown of England situate in the parishes of St Marylebone and St Pancras, 1789; sheets from first editions of Richard Horwood's Survey of London and its environs, 1793-1794; copies of 36 block plans (now deposited at Westminster City archive), c.1805-1870 covering the current estate; manuscript plan of two plots of land in Wigmore St, c.1840; manuscript plan of Estate in Portland Town, the 'Primrose Hill Estate', 1843; plan and elevation of 2-24 Mansfield St, c1850; elevation of 12-19 Devonshire St, 1870; section and elevation of the Oxford Market by Charles Fowler, 106 Gower St, c.1880; Ordnance Survey maps of the Estate, 1894-1896; plan showing extent of the Estate south of Marylebone Rd, c.1910; plan of extent of Estate in Portland Town, c.1910; plans entitled 'Howard de Walden Estate Land Duties' showing different categories of leases, 'Howard de Walden Estate Land Duties' showing 999 year leases, 'Howard de Walden Estate' showing mortgaged properties, 'Howard de Walden Settlement' showing central portion of Estate, c1915; plan of estate in Portland Town, c.1912; plan of Estate, c.1920;
and collection of 13,000 drawings relating to the estate c1890-present;

Title deeds including deeds relating to: Four pieces of ground north of Cavendish Square, 1724, 1749; Devonshire Place and adjoining area, 1791, [1810], 1866; 23 Aybrook Street and adjoining area, 1939, 1916; 7 Devonshire Place, 1789-1870; Great Portland Street and adjoining area, 1919; 11 (formerly 8) Mansfield Street, 1860-1900; 278-288 Oxford Street, 16-28 Holles Street and 6 Cavendish Buildings, 1921; 17 Upper Harley Street, 1865; 14 Westmoreland Street and 49 Little Woodstock Mews, 1905-1929; [7] George Street, York Buildings, St Martin-in-the-Fields, 1764-1788;

other Estate records including Survey of the Marylebone Estate, 1737; Local Acts of Parliament 1770-1831; Certificates for redemption of Land Tax on the Estate, 1851; Marriage settlement, 1912; Index to deeds and other Estate documents, c.1920;
news cuttings relating to the Estate, 1922-1925; news cuttings mainly on leasehold enfranchisement, c1929-1939;
memos, accounts and reports relating to the reorganisation of the Estate, c 1920-1964; correspondence and reports on the reorganisation of the Howard de Walden Estates Ltd, 1963-1964; papers relating to the Cavendish Square car park, c.1960-1966; Scottish Life Assurance Co: Group Policies for Pension Fund, 1969, 1975; weekly rent collection books, 1984-1988, 1990-1995;

photographs including images of 23 Queen Anne Street, c.1880, 1935, 1937, 1965 (31 photographs); Bedford Lemere photographs of the Estate and properties no longer on the estate, 1908-1917, and related correspondence, 2002; miscellaneous photographs, including the Oxford Market, 1875, 16-17 Holles Street, c.1903, Cavendish Square car park, 1968-1973, and Survey of the Howard de Walden Estate, c1981-1986 (3000 negatives and contact prints).

Papers of Benjamin Robert Haydon, 1826-1846, comprising letters to William Newton, his landlord, 1830-1845, relating to house repairs, his debts, requests for loans, death of his daughter, 1831; legal papers relating to Haydon's imprisonment for debt in the King's Bench, 1830, namely inventory of his goods for debt, authorisation to distrain goods, notice of court hearing; letter from Sir George Philips, 1836, concerning his picture 'Christ's Agony'; receipts for Haydon's life insurance policy payments, 1833-1845; Newton's marked copy of the catalogue of the sale of Haydon's effects, 1846.

Maps and rent rolls of the estate of Sir Richard St George, 1775.