When this drawing entered the Birmingham collection it was thought to be by Turner. Andrew Wilton, the acknowledged authority on the artist, has suggested that it is the work of Henderson, a member of the 'Munro School.'. The term 'Monro School' refers to a number of drawings and watercolours which were made at the homes of the patron Dr Thomas Monro (1759-1833). He encouraged artists to study his collection of paintings and drawings, and many of the most important practitioners of the day made use of his 'Academy'. Henderson was a neighbour of Monro in Adelphi Terrace, London. There is a suggestion, because of the dramatic nature of the subject, that this drawing is after another by John Robert Cozens (1752-1797).