Gertrude enrolled in this class of ladies taught by Duveneck at the suggestion of a friend in Florence, the American Bostonian and artist Lizzie Boott
Jordan, Anne. Love Well the Hour: The Life of Lady Colin Campbell (1857-1911). Troubador Publishing Ltd.
Lady Colin Campbell
Other members of the Charcoal Club
included Gertrude Blood's friend Lizzie Boott
(who finally married Duveneck in 1886, overcoming the scepticism of her friends because of her greater wealth and higher social position), Miss Gordan