This illustration shows President Theodore Roosevelt learning jui-jitsu from Yamashita Yoshiaki in the East Room. The spectators include future president William H. Taft, Roosevelt's sons, Theodore, Kermit, Quentin, and Archibald, and three women: most likely Roosevelt's wife, Edith, and daughters Alice and Ethel. Around 1905, the president invited the celebrated martial artist and instructor to the White House to provide a demonstration. The president himself took part in the demonstration in the East Room. This artistic interpretation was created by John Hutton for the White House Historical Association. Hutton's whimsical illustrations were featured in his book "How to Draw the Presidents," published by the White House Historical Association.

This photograph by Frances Benjamin Johnston shows Archie and Quentin Roosevelt, President Theodore Roosevelt's youngest sons, standing in an inspection line with uniformed guards near the White House.

This portrait photograph shows President Theodore Roosevelt's children and their pets. Left to right: Theodore III, Ethel, Alice, Quentin, Kermit, and Archie.

This drawing by George Varian shows the Roosevelt family admiring a Christmas tree. The caption reads: "None appeared more astonished than Mr. Roosevelt."

This photograph is a portrait of the entire Roosevelt family: President Theodore Roosevelt, First Lady Edith Roosevelt, and their six children. Left to right: Quentin, President Roosevelt, Theodore III (Ted), Archibald (Archie), Alice, Kermit, First Lady Edith Roosevelt, Ethel.

This photograph by Frances Benjamin Johnston shows Quentin Roosevelt, son of President Theodore Roosevelt, riding Algonquin, the family pony, while a White House police officer holds the reins.

This drawing by George Varian shows President Theodore Roosevelt setting up an miniature train set for his children Ethel, Theodore III, Kermit, Archie, and Quentin.

This photograph by Frances Benjamin Johnston shows First Lady Edith Roosevelt reading to her sons, Archie and Quentin, in the newly renovated Green Room.

This portrait of the Roosevelt family was taken by Pach Brothers Standing left to right: Kermit Roosevelt, Theodore Roosevelt III. Seated left to right: Quentin Roosevelt, President Theodore Roosevelt, Archie Roosevelt, First Lady Edith Roosevelt, Ethel Roosevelt.

This photograph by Frances Benjamin Johnston shows Quentin Roosevelt, son of President Theodore Roosevelt, sitting in a tree.

This photograph by Frances Benjamin Johnston shows Quentin Roosevelt, son of President Theodore Roosevelt, riding Algonquin, the family pony.

This illustration by George Varian shows President Theodore Roosevelt, First Lady Edith Roosevelt and their boys Theodore III, Kermit, Archie, and Quentin taking a carriage ride. The caption reads: "The President and Every One of the Family Went for a Drive into the Country."

This drawing by F.W. Brouard illustrates an anecdote describing how Quentin Roosevelt sought to comfort his older brother, Archie, who was ill with the measles. With the help of one of the coachmen, he brought their horse, Algonquin, to Archie's bedroom for a visit.