1. Mss Eur F116/18 Reference (shelfmark): Mss Eur F116/18 Title: Scope & Content: Letters from Sir Harcourt Butler to Sir Henry Erle Richards Collection Area: India Office Records and Private Papers Languages: English Date Range: 1905-1915 Extent: Unspecified
2. Mss Eur F116/19 Reference (shelfmark): Mss Eur F116/19 Title: Scope & Content: Letters from Sir Harcourt Butler to Sir Henry Erle Richards Collection Area: India Office Records and Private Papers Languages: English Date Range: 1916 Extent: Unspecified
3. Mss Eur F116/20 Reference (shelfmark): Mss Eur F116/20 Title: Scope & Content: Letters from Sir Harcourt Butler to Sir Henry Erle Richards Collection Area: India Office Records and Private Papers Languages: English Date Range: 1917-1919 Extent: Unspecified
4. Mss Eur F116/21 Reference (shelfmark): Mss Eur F116/21 Title: Scope & Content: Letters from Sir Harcourt Butler to Sir Henry Erle Richards, with one letter to Lady Richards, Sir Harcourt Butler's sister Isabel Dated as: 1920-22; 1924 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1920-1924 Extent: Unspecified