Views of the Panama Canal
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Figure 5.2 provides topographic and profile perspectives. Although the canal has been expanded since this map was created, it provides an effective visualization of the challenges the topography posed.
Figure 5.2 1911 Aeronautical view of the Panama Canal. (CP Gray, Central Novelty Company, 1911. Public Domain).
Source: CP Gray, Central Novelty Company, https://commons.wikimedia.org/wiki/File:1911_Aeronautical_view_of_the_Panama_Canal,_by_C._P._Gray,_Central_Novelty_Company,_from_the_Digital_Commonwealth_-_commonwealth_4m90fk088.jpg
This work is in the Public Domain.