SCIENTIFIC AMERICAN -
ORIGINAL FRONT PAGE WITH SCENES OF 5 PRINTS - "THE PNEUMATIC SYSTEM OF
THE WESTERN UNION TELEGRAPH COMPANY" - FEBRUARY 14, 1885. A WEEKLY
JOURNAL OF PRACTICAL INFORMATION, ART, SCIENCE, MECHANICS, CHEMISTRY, AND
MANUFACTURES
SHOWS: 1. RECEIVER. - 2. 23rd ST.
OFFICE. - 3. WESTERN UNION BUILDING. - 4. METHOD OF STOPPING CARRIER. -
5. EXHAUSTING ENGINES.