Draethen Corn Mill is shown and annotated on the first edition Ordnance Survey 25in mapping of 1878. On all subsequent editions, including the 2014 large scale mapping where the building is shown as having been extended, it is annotated as 'Melin Draethen (Disused)'
See Jones G.G., The Corn Mills of Caerphilly and the Surrounding District, in Melin: the Journal of the Welsh Mills Society, vol. 10 (1994), pp.43-73.
B.A.Malaws, RCAHMW, 16 April 2015.