ENDescription
Related Subjects
The graph displays the other subjects mentioned on the same pages as the subject "Ruggles, Daniel, 1810-1897". If the same subject occurs on a page with "Ruggles, Daniel, 1810-1897" more than once, it appears closer to "Ruggles, Daniel, 1810-1897" on the graph, and is colored in a darker shade. The closer a subject is to the center, the more "related" the subjects are.