<page_title> List of Pennsylvania state historical markers in Washington County </page_title> <section_title> Historical markers </section_title> <table> <cell> 1948 Donora Smog </cell> <cell> October 28, 1995 <col_header> Date dedicated </col_header> </cell> </table>
The 1948 Donora smog is one of the Pennsylvania historical marker in 1995.