For Courmayeur, see folio 62 verso of this sketchbook (D04460). The various sketches made nearby in the book are listed with it. Here, as identified by David Hill in correspondence with the author,1 Turner is looking back from the direction of Courmayeur to the village of Entreves and the entrance of the Allée Blanche – his ‘White Valley’. The Allée is close to the base of the Miage glacier. See especially the verso of this leaf (D04466) and double page spreads, folios 66 verso–67 (D04468–D04469) and 67 verso–68 (D04470–D04471) for other sketches made nearby.
Letter to David Blayney Brown, 4 April 2004, Tate catalogue files.