These incredible late 19th century maps offer a glimpse into the urban landscape of America after 1865, post-Civil War, when New York was home to two million and was yet to see widespread electricity.

Schmidt calls the map an exercise in the “Digital Humanities,” where tools from the 1990s are used “to answer questions from the 1960s about 19th century America.” A Luminescent Map of the ...

John Wesley Powell, explorer, geologist, and scientist, produced this map while he was the head of the Bureau of American Ethnology, as part of an 1890 Annual Report. According to Powell’s ...