1940 Press Photo Twins convene in Texas along with scientists to gather data

Photo shows from left to right are three sets of twins, Elsie and Elvie Acord; Doris and Dorothy Blank and Pearl and Nell Spencer performing a feat known as tongue rolling for one of the scientists. It was one of the studies in heredity, the children supposed to be capable of doing it if their parents were.

Photo is dated 1940.

Photo measures 9.25 x 7 inches.