(OH, IL,IN,MO- Aviation) Cincinnati (T-7) ~Catalog 61~ showing their elevation and slope

showing their elevation and slope throughout

Indexed Map of Montana

An interesting early thematic map looking at the agricultural make-up of mid 19th century US

at a changing time for the British Empire

(OH, IL,IN,MO- Aviation) Cincinnati (T-7) ~Catalog 61~ showing their elevation and slopeCincinnati As the air age developed, a necessity of a new mapping approach became obvious, one which would show the new highways of aviation. While the map is rich with roads, towns, terrain, etc, it is for landmarks in relation to the bands of air that would be used for take off and landing into region air fields. Issued during the war years, these maps many times are noted as "Restricted" and will include "Danger Areas". This chart spans from the St