The classical training absorbed at Harvard shows in the commemorative ode commissioned from Rideout for the Tercentennial Anniversary of the settlement of Saint Croix Island, Maine in 1904. Moreover, that ode, alone of all the Tercentennial speeches and formalities, makes mention of Native Americans. This awareness shows in his college friendship with William Jones, the Native-American anthropologist who died in the Philippines in 1909. (William Morrow and Raynal Bolling commissioned Rideout to write a memorial biography of Jones.) Rideout's last published work was an adventure story, "Lola the Bear", set in the Maine woods among tribal people with whom Rideout had hunted and fished since boyhood.