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![An image of the current map of the month, a French map of the Colorado river from 1844.](/sites/default/files/styles/card_300/public/images/1844_plan_de_lembouchure_du_rio_colorado_dans_la_Mer_Vermeille_map_resized.jpg?h=ebac4ef0&itok=CF7EziTY)
Map of the Month: June 2021
Our June Map of the Month is this 1844 Plan de l'embouchure du Rio Colorado dans la Mer Vermeille (English title: Plan from the Mouth of Rio Colorado in the Ruddy Sea). It is a French survey of the mo...
![Pilot Chart of the Great Lakes](/sites/default/files/styles/card_300/public/images/1897_pilot_chart_of_the_great_lakes_front_resized.jpg?h=b652b381&itok=-qVJmYW-)
Map of the Month – March 2021
Our March 2021 Map of the Month is this 1897 Pilot Chart of the Great Lakes by J.E. Craig and A.C. Roberts. It includes a detailed navigational map of the lakes as well as a variety of information on ...