SABR

Jackson Manikin Baseball Indicator

Jackson Manikin Baseball Indicator

The Jackson Manikin Baseball Indicator was invented by Thomas H. Jackson of Scranton, Pennsylvania. He received a patent for it in 1913 and that summer began entertaining fans with his device in Atlantic City; Washington, D.C.; Rochester; and his own hometown. (U. S. PATENT OFFICE 1,053,817)

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