Photographic print of children receiving shots

A black and white photograph of a group of children receiving vaccinations. The children are formed in a line. Three unidentified women stand with the children. An unidentified man sits at a wooden table covered in white cloth with two columns of syringes on top. The man sits with his back away from the camera and sticks a syringe into the proper left arm of a girl at the front of the line while the woman standing to the girl's proper right rests a hand on her proper left shoulder. There is an imprint of a palm tree in the bottom right corner of the border on the front of the photograph. The back of the photograph has an inscription, by hand, of the numbers: [531], [531.01], and a photographer's stamp.