WHITAKER, Thomas Dunham, Yorkshire antiquarian (1759-1821). Autograph Letter Signed to Mr Robinson, bookseller and publisher. Creation dates: 29 July [1815?]
Letter of attorney from Sir Thomas Blount and others, for the manor of 'Bountes place', Staffordshire and elsewhere. Sotheby's, LO4240, Lot 44. Creation dates: 1443
EULER, Leonhard, mathematician (1707-1783). Autograph Letter Signed to Jean-le Pond d'Alembert (1717-1783), illustrated with a sketch of a vibrating string in mechanics and containing a large number of algebraic calculations. Creation dates: 2 Oct 1746
LEIBNIZ, Gottfried Wilhelm, philosopher, mathematician and scientist (1646-1716). Autograph Letter Signed to [Bernard de Fontenelle], the French philosopher. Creation dates: 12 July 1702
HERSCHEL, Caroline, astronomer. Autograph Letter Signed to her nephew, J F W Herschel, discussing some telescope lenses and her brother William's papers. Creation dates: 3 June 1825