ENDescription
Related Subjects
The graph displays the other subjects mentioned on the same pages as the subject "Chief Clerk A.B. Johnson Esq. for Engr. Sec'y". If the same subject occurs on a page with "Chief Clerk A.B. Johnson Esq. for Engr. Sec'y" more than once, it appears closer to "Chief Clerk A.B. Johnson Esq. for Engr. Sec'y" on the graph, and is colored in a darker shade. The closer a subject is to the center, the more "related" the subjects are.