1. RP 2658/1 Reference (shelfmark): RP 2658/1 Title: Scope & Content: Letter of Maskelyne to Nourse about his tables requisite to be used with the nautical ephemeris Creation dates: 25 May 1780 Collection Area: Western Manuscripts Languages: English Date Range: [1979-1985] Extent: 1 photocopy
2. RP 2658/2 Reference (shelfmark): RP 2658/2 Title: Scope & Content: Letter of Maskelyne from Greenwich to an unnamed correspondent Creation dates: 24 June 1801 Collection Area: Western Manuscripts Languages: English Date Range: [1979-1985] Extent: 2 photocopies