Kathleen Wilkinson Wootten (Mrs. Henry Stewart Wootten). A Health Education Procedure for the Grades and Grade Teachers. The National Tuberculosis Association, 1926, 1927.
I love the posture of the two kids at the right! Reminiscent of Hal Roach's "Little Rascals" hamming it up for the camera with the "Keep on truckin'" pose long before Robert Crumb popularized it! Contrast them with the two future solid citizens at the front.