Gladys Geis, 1910
We figured out the line up using the two sisters Alice and Cleora Dion. These appear to be the first two girls seated, as they look alike and are wearing the same necklace. From there we are assuming the first three names are the girls who are standing. This would make Gladys Geis the first girl on the left, standing. However, this is only our opinion, so please use your own judgement.