Pneumatic message system...

Item # 613211

March 24, 1877

SCIENTIFIC AMERICAN, New York, March 24, 1877 The front page features a large illustration "Pneumatic Transmission in New York City" with an accompanying article and more illustrations inside. Inside the issue is "New Experiments in Mechanical Flight" with illustrations; "Houyoux' Rotary Pump"; and more illustrations, articles and advertisements.
Complete in 16 pages and in nice condition.