Car 926 is leaving Canal Station to begin its day's work on the Desire line.  This looks like a real Desire line photograph.  However, there are two subtle flaws.  First, it was unusual for a 900-series car to be assigned to work the Desire line.  In the 1940s, until 1948, most 900s were stationed at Arabella Station, and Canal Station was mostly populated by 800s and 1000s.  Second, as Morris Hill has pointed out to the author, the automobile partly visible at the right edge of the picture is a Nash Rambler of the model year 1950, '51, or '52.  Since the Desire line lost its streetcars in 1948, this must be a posed picture.