In 1887, Levi Walter Yaggy published the Geographical Portfolio–Comprising Physical, Political, Geological, and Astronomical Geography with his publishing company, Western Publishing House of Chicago. The popular set of maps and charts (an expanded second edition was released six years later) was intended for teachers to use in classroom settings. The two-by-three-foot sheets used clever composite images … Continue reading Cross-Sections of Geological Formations and Views of the Cosmos Bring the World to Life in 19th Century Educational Charts