1887 Twelve-Inch Globe Map - Historical World Projection with Isothermal Lines #1773926 (License: Personal Use)

Created in Chicago in 1887, this rare twelve-inch globe map employs a distinctive conical segmented projection-each wedge representing a longitudinal slice of Earth-to accurately depict continents, oceans, and major geographic features. The map includes isothermal lines for January and July, labeled equatorial and polar circles, and period-accurate political boundaries and nomenclature, such as “Persia” and “Turkestan.” A central inset displays an analemma and scale details, reflecting late-Victorian cartographic precision and educational intent.

Used in historical cartography collections, museum exhibits, or academic resources on 19th-century geography; ideal for users researching vintage map projections, climate visualization history, or global education tools of the Gilded Age.