Sold For $275
*Includes Buyers Premium
British mathematical physicist and engineer (1824–1907) who, as the Professor of Natural Philosophy at the University of Glasgow for 53 years, did important work in the mathematical analysis of electricity and formulation of the first and second laws of thermodynamics, and did much to unify the emerging discipline of physics in its modern form. He received the Royal Society's Copley Medal in 1883, was its President between 1890–1895, and in 1892 was the first British scientist to be elevated to the House of Lords. ALS signed “Kelvin,” one page both sides, 4.5 x 7, Netherhall letterhead, October 15, 1900. Handwritten letter to Mary St. John-Mildmay, in full: "I have received your two letters and your photograph for which I think you very much. If you are writing to your uncle Gisbert Kapp, give him my kind regards and tell him that, with other friends, we were very sorry to lose him from England, but we all wish him well, in Germany." In very good to fine condition, with light edge toning and adhesive residue to the reverse. Accompanied by the original mailing envelope's address panel, filled out in Kelvin's own hand.
![]()
This item is Pre-Certified by PSA/DNA
Buy a third-party letter of authenticity for
(inquire for price)
*This item has been pre-certified by a trusted third-party authentication service, and by placing a bid on this item, you agree to accept the opinion of this authentication service. If you wish to have an opinion rendered by a different authenticator of your choosing, you must do so prior to your placing of any bid. RR Auction is not responsible for differing opinions submitted 30 days after the date of the sale.
Third-party authentication service applies only to signatures and handwriting, and does not cover the addition of sketches, artwork, musical quotations, etc.