Harvard
Providence

1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005 2010 2015 2020

five years earlier (or press a) --- five years later (or press s)

Lavender represents motorbuses, green trolleybuses, and red electric streetcars. The tunnels themselves are shown in black and the surrounding rapid transit lines in light grey.

Based on weekday midday service using the Harvard and College Hill transit tunnels during year in question.
Scale: = 10 km (30 CSS pixels per km)

Please send any corrections or questions to threestationsquare at gmail dot com.