Description
Related Subjects
The graph displays the other subjects mentioned on the same pages as the subject "David B. Ogden [Dr?] ". If the same subject occurs on a page with "David B. Ogden [Dr?] " more than once, it appears closer to "David B. Ogden [Dr?] " on the graph, and is colored in a darker shade. The closer a subject is to the center, the more "related" the subjects are.