Archival Sources

Oxford University, Bodleian Libraries: Mary Somerville collection

British Library, Manuscript Collections: 1830-48: letters (20) to Charles Babbage (MSS 37185-201) 

Royal Society, 1829-69: corresp with Sir John Herschel (58 items), HS, also

available on line: https://makingscience.royalsociety.org/correspondence-explorer?first=Mary+Somerville&second=John+Frederick+William+Herschel 

Geological Society of London, c1869: letters to Sir RI Murchison and his wife , M/S22 

Cambridge University: Trinity College Library: 1828-48: corresp with William Whewell

Epsilon: 19th century scientific correspondence