[SCIENTISTS]. [HAWKING, Stephen (1942?2018)].?Reith Lectures Exclusive: A Brief History of Black Holes [in: Radio Times magazine, 23?29 January 2016]. 4to. Original color photographic wrappers. SIGNED BY HAWKING WITH HIS THUMBPRINT on p. 11 with an authentication inscription by witnesses Steve Grocutt and George Zhao dated 20 January 2016: ?To Gaynor, wherein much fun we had. This is right thumb print of Professor Stephen Hawking, witness by George Zhao? and signed below by Steve Grocutt. Includes a COA signed by Grocutt and dated 25 February 2021, stating that this item was signed for his wife by Hawking in his presence. Grocutt was a member of Hawking?s private healthcare team from 2015?2017, traveling with him through the UK and overseas where ?[Grocutt] had a number of items signed by [Hawking] using his right thumb print (his usual way of signing)?. [Housed together in a presentation wooden box with:] five large cards each with several mounted color photographs of Hawking with Grocutt and Zhao and a booklet for a service of Thanksgiving for Hawking at Westminster Abbey.