Joseph A. "Jock" Yablonski (1910-1969)
A longtime resident of California and elected official of the United Mine Workers of America. He led efforts to improve working conditions for coal miners. On December 31, 1969--shortly after his defeat as a reform candidate for president of the UMW--he, his wife Margaret, and their daughter Charlotte were assassinated. In 1972, reformers were elected to leadership of the UMW.
David Rumsey Map Collection, Stanford LibrariesUSGS Historical Topographic Map CollectionUSGS Historical Topographic Map CollectionUSGS Historical Topographic Map CollectionDavid Rumsey Map Collection, Stanford Libraries
Marker data: Pennsylvania Historical and Museum Commission via data.pa.gov
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