Pneumatic Tube Carrier

Image of Postmaster Frederick E. Coyne placing the first package of mail into the pneumatic tube carrier in the stamping room of a temporary post office with R. W. Morrell, pneumatic tube expert, standing nearby in Chicago, Illinois. The Chicago postal pneumatic tube service began between the post office and the Winslow rail road station on August 24, 1904 using miles of tube rented from the Chicago Pneumatic Tube Company.