Sir William Huggins OM KCB PRS (b.7 February 1824 – d.12 May 1910) was an English astronomer best known for his pioneering work in astronomical spectroscopy together with his wife Margaret Lindsay Huggins, two autographed letters on headed paper dated 16 January, 1903, the typed letter discusses the use of induction coils and a vacuum tube, the second letter is on headed paper dated 13 Sept 1903 and is hand written, it discusses the purchase of radium and a meeting Huggins had with Professor Rutherford concerning inferior radium.

The first letter is one sided and measures is 11cm x 18cm,

The second letter is four sided each side measuring 11cm x 18cm, with watermark for ‘Genuine Velum Wove'

Note: This letter forms part of a collection recently discovered in the estate of Adolf Isenthal. Letters from this collection have not been previously published.