[ Sir Harry Ricardo, pioneering engine designer. ] Autograph Letter Signed ('Harry R Ricardo') to the Secretary, Royal Society of Arts, regarding an invitation to give a course of lectures.

Sir Harry Ricardo [ Sir Harry Ralph Ricardo ] (1885-1974), pioneering engine designer [ Royal Society of Arts, London ]
Publication details: 
Penotone, Lancing, Sussex. 22 July [1921].

1p., 16mo. In good condition, lightly aged. With the Society's date stamp and a query in red pencil. He apologises for the delay in replying to an invitation 'to give a short course of lectures': 'I should very much like to do this at some later date but I am afraid that I have already committed myself so deeply for this next winter and spring that it will not be possible for me to do so.' He is 'very flattered indeed' by the inviation and regrets having to decline it.

Four Autograph Letters Signed and one Typed Letter Signed to G[eorge]. K[enneth]. Menzies, Secretary, Royal Society of Arts.

William Arthur Bone [THE COAL INDUSTRY]
Publication details: 
31 Oct. 1913 and 6 Feb., 2 March, and 5 and 12 Oct. 1919.; the first three on Imperial College of Science and Technology letterhead, the fourth from St Albans and the fifth from Stockton on Tees.

English scientist (1871-1938), Professor of Chemical Technology at the Imperial College of Science and Technology. All items quarto and very good, though lightly grubby, creased and stained in places. All five docketed and bearing the Society's stamp. LETTER ONE (one page): He will be happy to give 'a course of Cantor lectures [...] on the subject of "Surface Construction" provided that you will put in the requisite gas & air services at your cost for the practical Demonstration'.

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