His painting of Mount St. Helens in eruption at night in 1847 which is housed in the Royal Ontario Museum in Toronto was the only known image of an active Cascade volcano until the eruption of Lassen Peak in California in 1914. Although the scene was somewhat fictionalized, it did correctly show the active vent on the side of the volcano rather that the summit. He stayed for two months in that area, traveling and sketching among the Native Americans on Vancouver Island and around the Juan de Fuca Strait and the Strait of Georgia. He returned to Fort Vancouver in mid-June, from where he departed to return east on July 1, 1847.