Photographic postcard of Harriet Tubman's great nieces, Eva and Alida Stewart

A photographic postcard featuring a black-and-white image of Harriet Tubman's great nieces, Eva and Alida Stewart. The full length portrait shows the two women standing side by side, wearing large hats with long-sleeved blouses and long skirts. They are looking at the camera with their hands behind their backs.