The Middlesex & Boston Street Railway Company

I love that colorized photo!

On a vaguely related note, does anyone know of a source (printed books are fine!) for a track map of the Middlesex & Boston lines in the Waltham/Newton/Watertown area? I have an early 20th century M&B timetable map that shows the route outlines, but I'm looking for something more detailed.

Try the Massachusetts State Library Atlas Scanning Project. They have done Middlesex County Vol. 1 which includes those 3 towns. It is not a full
track chart but, it does show the exact streets. I do have a track chart but it is for west of there. (Natick & Cochituate etc.) I'll post it if it is useful.
The 3rd volume of Middlesex isn't done.
Leo S.

Thanks to both of you!

Ward Maps (the same folks who run the MBTA store) have thousands of old maps scanned. Here for example is a partial scan of Middlesex 1898.

Thanks for the ID!