Triumph of Time,c. 1901, a two-panel mural on the ceiling of the Elliott room of the McKim Building of the Boston Public Library. The mural shows 12 female figures representing the Hours spread among twenty horses representing Christian Centuries. The horses are pulling a chariot carrying a male figure representing Time.
Julia Ward Howe, 1901, red chalk drawing on gray wove paper. Given to the Metropolitan Museum of Art in 1904.
Diana of the Tides, 1908, a mural in the National Museum, now the Smithsonian National Museum of Natural History. In the paleontology hall, but currently not visible due to a wall.
Julia Ward Howe, a portrait in oil on canvas, finished c. 1925 by William Henry Cotton after Elliott's death . On display at the National Portrait Gallery, Smithsonian Institution.
Chevalier, a portrait in oil on canvas Samuel Gridley Howe as Surgeon General in the Greek War for Independence, wearing the costume of a Greek soldier. It currently hangs in the John Hay Library at Brown University.
Terrace Garden, Rome, an oil painting on canvas depicting the artist's terrace at his apartment in Rome. It was painted at the request of Larz Anderson, who met his wife Isabel Weld Perkins for the first time at this location.