Description
Dr Joseph Hartshorn was an American physician in Philadelphia.
Related Subjects
The graph displays the other subjects mentioned on the same pages as the subject "Dr Joseph Hartshorn". If the same subject occurs on a page with "Dr Joseph Hartshorn" more than once, it appears closer to "Dr Joseph Hartshorn" on the graph, and is colored in a darker shade. The closer a subject is to the center, the more "related" the subjects are.