Among her well-known public monuments is the statue of Samuel Adams (1876) in the National Statuary Hall Collection in the US Capitol, Washington, D.C.. Whitney traveled to Italy in 1875 to acquire the marble for the sculpture. During the trip, she studied French sculpture techniques at Écouen, realized in her work "Le Modèle", which was created with a degree of Realism. A bronze and granite replica (1880) of the Samuel Adams sculpture is installed in Faneuil Hall Plaza in Boston, where Adams gave speeches about British rule and taxation.