mrstheodoreroosevelt

Edith Kermit Carow Roosevelt, Pres. Theodore Roosevelt's second wife and first lady. Judging that this is from the same set as a photo of Mrs. Theodore Roosevelt Jr., it is no earlier than 1910. en.wikipedia.org/wiki/Edith_Roosevelt

No, that would be Mrs. Theodore Roosevelt, Junior -- wife of the former President's son. She was the former Eleanor Butler Alexander. They were wed on June 20, 1910. This photo was taken on June 17, 1913. [Edith Kermit Carow Roosevelt would have been 52 in 1913.]

Another Bain/LOC photo, taken the same day, shows a woman identified as Mrs. Roosevelt at the race track, :

New York society bluebloods in attendance at the horse races at Belmont Park, on June 17, 1913. A story in the New York Times on the 18th reported the roster of winners that day: query.nytimes.com/mem/archive-free/pdf?_r=1&res=9406E...

A perfunctory Google search turns up few clues as to the identity of "Mrs. A. Pederneiras." Nor is she mentioned in the cursory New York Times stories that reported stages of Theodore Roosevelt's South American excursion. Mrs. Roosevelt (Edith Carow Roosevelt) went with TR to Argentina, Brazil and Chile, but did not accompany the former President on his expedition to the interior of the continent, through the insect-infested rain forest and down the River of Doubt. Mrs. Roosevelt left Chile in late November, 1913, to begin her return journey to the U. S. A Bain/LOC photo of the former President in Rio: Other Bain/LOC photos of Teddy Roosevelt in Rio:

I doubt the 'common unwashed' would get so close to a former first lady today. Lovely picture.