by Pennsylvania State University

1918

by Engineers' Society of Pennsylvania

1909

by Engineers' Society of Western Pennsylvania

1930

by Pennsylvania State University. Agricultural Experiment Station

1897

by Engineers' Society of Western Pennsylvania, Pittsburgh

1912

by University of Pennsylvania

1921

by University of Pennsylvania

1901

by Pennsylvania

1903

by Pennsylvania. Governor

1925

by Pennsylvania. Office of the Governor

1925

by First School District of Pennsylvania (Philadelphia, Pa.) Board of Public Education

1909

by Pennsylvania State College. Engineering Experiment Station

1924