When visiting the 1913 Armory Show, the ex-President Theodore Roosevelt purportedly ''waved his arms and stomped through the Galleries pointing at pictures and saying ''That's not art!'' Although not a lover of modern art, this handsome reproduction of the Gleb W. Derujinsky (1888-1919) bust in the collection of the New-York Historical Society captures the spirit of America's beloved twenty-sixth president. Theodore Roosevelt, (1858-1919), embodied the national spirit of daring exploits, thoughtful intelligence, and enduring accomplishments. Wielder of the Big Stick, member of the Rough Riders and builder of the Panama Canal, ''Teddy'' Roosevelt was also an avid conservationist, a prolific writer, and a zealous advocate of the ''strenuous life.'' Height: 10.5 inches, weight: 6 pounds.