Diagrams of a clock and indicator invented by P.H. Page, partly in his hand, and partly in typescript, with an accompanying letter from C.T. Wood to C.E. Sayle, 20 January 1908; Page, 'Observations and Criticism on Bonnycastle's Astronomy'; a letter from Page to F.J.H. Jenkinson, 18 January 1908; a letter from the Page to H.G. Aldis, 13 November 1913; Page, 'Clock and Indicator'; a letter from H. Montagu Butler to F.J.H. Jenkinson, 27 March 1907; a letter from Page to H. Montagu Butler, 12 January 1907; a letter from Page to F.J.H. Jenkinson, 17 July 1909; and various printed notices and accounts of the clock and indicator.