Turner began using this sketchbook at the start of his 1817 tour and continued using it throughout his travels along the Rhine. He arrived at Cologne on 18 August and spent a week going upstream to Mainz, chiefly on foot along its western bank. He then returned to Cologne, reaching it on 29 August. During these eleven days he sketched incessantly, many of his small pencil drawings later becoming the basis for the watercolours painted immediately after the tour (nos.8-18). The sketches extending across ff.70v-71r were drawn as he travelled by boat from Mainz back to Bingen along a wide peaceful stretch of the Rhine bordered by gentle hills covered with vineyards.