Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Prof. [Owen Willans] Richardson, FRS In preparation of the paper 'The Excitation of Soft X-Rays' publication, asks its author Prof. [Owen Willans] Richardson for figures 1-3 and 5 in to be redrawn in order to be etched properly. Asks if Richardson would like the original figures back, or if an engraver should recreate the figures, the costs of which will be charged to him 19 March 1928