This photograph shows the 2000 block of Massachusetts Avenue, which is just north of Porter Square, featuring the business of Alexander Souter, house and decorative painter. The building also houses a carpenter and a carriage painter and repairer. The photograph, taken sometime between 1904 and 1909, is from the Cambridge Room’s Glass Plate Negative Collection (002).
Below is painter Alexander Souter’s advertisement from the October 19, 1912 edition of Cambridge Chronicle:
And here’s what 2015 Massachusetts Avenue looks like today: