Here's a link from Shorpy and a kool 1915 mail truck. Not sure what make it is.
Well I'm no expert here, but what with the gas headlamps, brass sidelamps and fenders, this doesn't look anything like a '15 to me.
It looks like the body could have been converted from a touring car.
The car is a converted touring from about 1907 - 1910. It appears nearly new, the polished headlights and overall good condition don't show a mail truck with many miles on it.
It is four cylinder, selective gear shift (not planetary), probably 24 - 28 HP. A car like this would cost from $1800 - $2400 perhaps. It could be one of a hundred similar, soon to be orphan makes of cars available in those days.
The neighborhood looks affluent and constructed between 1880 - 1900. Probably east coast.
Yet another photo from the National Photo Company glass negative collection in the Library of Congress.
Most likely taken in Washington DC as that is where the National Photo Company was located and most if not all the negatives and prints in the collection are photos taken in Washington DC.
Click here to learn about the National Photo Company collection
You can download an extremely high resolution file of the photo from the Library of Congress website and view it to your heart's delight on your computer, print it at home or take it to your local photo or print shop and have a high quality print made.