Definition of topographical:
- "American Military Insignia 1800-1851", J. Duncan Campbell.
- "History Of Egypt From 330 B.C. To The Present Time, Volume 12 (of 12)", S. Rappoport.
Although during my recent expedition I have not travelled over much new ground, the advantages to geography are considerable, owing to the professional observations of Lieutenant Baker, R. N., to whom I confided the entire charge of the topographical department.- "Ismailia", Samuel W. Baker.