The City of Toronto Archives contain many photos and documents of the early days of the TTC and its predecessors. Among them is a June 1914 schedule for the St. Clair car, a line that had opened only a year earlier.
The line ran from the Grand Trunk Railway crossing just west of what is now called Caledonia Road, but on the timetable shown as “Station Street”. A one way trip was given 18 minutes to reach Yonge Street during all hours of service. Headways were 4.5 minutes AM peak, 6 minutes midday, 4 minutes PM peak, 7 minutes evenings.
There were 13 crews for a day’s service with work hours ranging from 8 to 10 hours, most of them over 9 hours with a spread of 11 to 14(!) hours.
Thanks to Martin Phills for alerting me to this item in the archives.
Once you visit that site, it’s hard to leave without much browsing. Here is a selection of photos of St. Clair before and during construction of the streetcar line.
City of Toronto locomotive 1 at the Wells Hill fill 1912
City of Toronto locomotives 1 and 2 near Bathurst and St. Clair 1912
Wells Hill Bridge 1914 (temporary trestle in the background)
In the woods at St. Clair and Ossington (Winona) 1911
St. Clair and Ossington (Winona) looking west 1911 (Oakwood Collegiate in background)
St. Clair and Ossington (Winona) looking east 1911
St. Clair at Ossington fill (Winona) looking east 1912
Transit Toronto has a good article on the history of the route.