TTC Planning and population curves

Recently we scanned sections of the 1915 Report to the Civic Transportation Committee on radial railway entrances and rapid transit for the City of Toronto.
Since Toronto is (always?) mumbling about public transportation issues and expansion woes, the text provides a interesting glimpse back to the mentalities and politics that shaped the foundations of the city's current transit infrastructure. Spaced in between the pages of the report are a series of maps and line charts plotting population curves.

The chart plots the population density from the city core from 1879 to 1914 with estimations for 1927 , 1936, and 1950 - when they estimated the population would reach 1,500,000. (The 1950 Toronto population was closer to 1,068,000.)

Just as with the previously mentioned Portland bike map, the city map in this graphic shows concentric rings. Here, they originate from the intersection of Yonge & Queen St. The text focuses much of its statistics on this core transportation area.
David Topping tackled this concept of the informal city center when mapping apartment rentals describing their location as "the heart of the city". In this very informal project, Yonge & Queen St still maintain a high rank as the city's heart - as do a high number of locations connected to the TTC Subway.