Volume I, sunspot observations made at Kew Observatory, by Warren de la Rue Notebook labelled inside 'New Observatory, Measurements of Sunspot Positions', comprising tables of Warren de la Rue's astronomical observations recording sunspot activity between January and June 1874, accompanied with albumen prints. Data recorded is the scale reading of the slide, scale reading centre, ratio of a/r, position, distance from the centre, corrected radius and corrected ratio. Part of the Kew Observatory project to capture daily images of the sun and track sun-spots over time, using the photoheliograph built for this purpose by Warren de la Rue. This pursuit was first suggested by Sir John Herschel and executed by Warren de la Rue from February 1862 to late January 1872. Notes include occasional comments on the quality of individual photographs. Some annotations inserted in purple ink at a later date. 1 January 1864-11 June 1864