This group photograph depicts the Y.M.C.A. Standard Leaders Club of Mexico City, D.F. (Federal District) which was taken on December, 1918. The men shown in the picture are standing and sitting in four rows in what appears to be a gymnasium. It is presumed to be the gymnasium of the Mexico City YMCA. Notice how all the men are wearing the YMCA triangle created by Luther Gulick.Luther Gulick was the father of physical education and recreation in the United States. Luther Halsey Gulick designed the seal while serving as a faculty member at the School for Christian Workers, now known as Springfield College. Gulick intended the symbol to represent the three united natures of a complete man: physical, mental, and spiritual. In 1895, the YMCA al...