George E. Tirrell was one of a crew of approximately fifty who left Boston in March 1849 en route to San Francisco aboard the bark FLETCHER. An artist by nature, Tirrell had been hired by William Wright of Boston to work in the gold mines in the interest of Wright's company. During the voyage, Tirrell captured his experiences in several sketches, which he sent to his sister on July 14, 1851, along the route to California and the island of Juan Fernandez, Chile, where he went ashore.
From the description of George E. Tirrell papers, 1851 [manuscript]. (East Carolina University). WorldCat record id: 657340147