File:Ethel roosevelt w mother Edith 1909.jpg

Summary
Ethel Roosevelt Derby was Theodore Roosevelt, 26th US President's second daughter born in 1891. She was the only daughter of TR and his wife, Edith Kermit Roosevelt. Photo is Ethel in 1906 with her mother, first lady, Edith Kermit Roosevelt. Source - Public Domain. URL - http://www.americanpresident.org/history/theodoreroosevelt/firstlady/