1909
A.J. Finberg, A Complete Inventory of the Drawings of the Turner Bequest, London 1909, vol.I, p.87, XXXVIII 70 (as ‘“Pool on the Summit of Cader Idris.” Water colour, unfinished, and spotted with rain.’ c.1798).
1972
Gerald Wilkinson, Turner’s Early Sketchbooks: Drawings in England, Wales and Scotland from 1789 to 1802, London 1972, reproduced in colour, p.64.
1982
Jerrold Ziff, ‘Turner’s First Poetic Quotations: an Examination of Intentions’, Turner Studies, vol.2, no.1, Summer 1982, p.4 ill.4.
1984
Andrew Wilton, Turner in Wales, exhibition catalogue, Mostyn Art Gallery, Llandudno 1984, p.52.