English scientist and astronomer (1836-1920) credited with Pierre Janssen as the co-discoverer of helium. ALS, three pages on two adjoining sheets, 5 x 8, Nature letterhead, December 21. Handwritten letter offering an explanation for a misunderstanding over a journal article. In fine condition, with a small rusty paperclip impression to the top edge of the first page.
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.
