Date and location unknown. Left-click images to enlarge.
Several Early 20th century mail service images below the fold...
Near Greenfield Indiana (1905).
Before Fedex: Office at the Checkerboard Airmail Field in Chicago.
Parcel Post Wagon in New Bedford, Massachusetts (1913).
Picking up the mail in a Columbia Touring Car.
Three-wheeled Indian motorcycle in Washington, D.C., on the corner of Pennsylvania Avenue and 12th Street.
City letter carriers with hand carts.