(Thematic-Racial) Map Showing the porportion of deaths from Enteric, Cerebro-Spinal and Typhus Fevers....
From an early and foundational data based study of many aspects of the U.S. Here a thematic look at specific diseases and their reach from dense populations in the southeast, up to the central portions of Minnesota. An early epidemiological study for the still growing nation as its settlement continues to press westward.
Condition is good with marginal repaired tears. Size is approximately 20 x 15.25 (inches)