COMPARATIVE ATLAS · CHICAGO
THE ELEVATED LOOP 1897–1901
What changes when the railway stays the same, but the map changes?
Follow Chicago’s elevated Loop through a geographic street map, a schematic, and a bird’s-eye illustration. Switch views to see what each representation reveals—and what it asks you to forget.
Explore the Infrastructure AtlasOne circuit. Three ways of seeing.
Zoom with the buttons; drag with a mouse. For touch dragging, enable “Drag on touch.” Keyboard: focus the map, use arrows to pan, + / − to zoom, Home to reset.
Choose a corridor, then switch maps. Its identity stays with you.
The street grid, river, and shoreline put the railway back into its surroundings.
Geographic view. The street grid, river, and shoreline put the railway back into its surroundings.
Historical comparison: 1897 pictorial plate / 1901 geographic plate. One selected Loop circuit; other lines and branches are outside this trace. Image-plane annotations are approximate; they carry no WGS 84 coordinates, surveyed distances, or travel times.
Map of the central portion of Chicago: showing railroads, depots and street transportation lines
University of Texas at Arlington Library, via The Portal to Texas History · 2012-790 · ark:/67531/metapth310619
Public Domain in the United States. Public domain in the United States by expiration of copyright: published in Chicago in 1901. This is Cartologium’s assessment; the repository’s item page leaves copyright status undetermined.
The archive identifies Chicago publication in 1901. The Library of Congress guide identifies U.S. works published before 1931 as public domain in 2026. The map area is displayed without the modern scanning targets.
The geographic view keeps the street grid and water in sight. The schematic preserves the circuit’s connections while simplifying its geometry. The pictorial plate adds buildings, depth, and a railway advertisement. These are different answers to different questions.
The 1897 plate’s title advertises the Rock Island station. Its prominence is a useful place to ask how a publisher’s interests shape a map. This pilot compares the shared street circuit, rather than treating the two publication dates as a single snapshot.
Each overlay joins hand-inspected street junctions in that scan’s pixel coordinates, with the origin at the top left. The schematic uses the same corridor identities and adjacency. The scans have no assigned EPSG coordinate system; their projections are not established by these item records. The pictorial view is a perspective drawing. No geographic reprojection, distance measurement, station inventory, or service directions are inferred.
The geographic scan has limited resolution. Its trace follows the printed corridors approximately; it is a reading aid, not surveyed track geometry. Hiding the trace reveals the original plate. Shared links retain the source version, view, corridor, layer settings, and framing. Their social preview represents this complete study.
Map of the central portion of Chicago: showing railroads, depots and street transportation lines
Public domain in the United States by expiration of copyright: published in Chicago in 1901. This is Cartologium’s assessment; the repository’s item page leaves copyright status undetermined.
All elevated trains in Chicago stop at the Chicago Rock Island and Pacific Railway Station, only one on the Loop
Public domain in the United States: published in Chicago in 1897. The Library of Congress record states free to use and reuse, with no contrary rights advisory.
Public-domain assessment is for the United States, based on publication in 1897 and 1901. Library of Congress copyright guidance explains the expiration rule. Archival authorship and institutional credits remain visible.
Original schematic, annotations, and editorial diagrams © Cartologium. The cited historical map plates retain their public-domain status in the United States; each archive record carries its source-specific notices.
