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.

3rd & Wood Sts., California, PA, United States

California Boatyards. A major steamboat building center on the Monongahela, 1852-79. No fewer than 131 boats were constructed here (74 in the 1850s alone), primarily for the western river trade. The boatyards ceased operations when the railroad (P V & C) acquired the right-of-way, 1879.

Borough library (old railroad station), Wood St., California, PA, United States