. Bell telephone magazine . Literally a Laboratory ix the Air: the Interior of the Ford Plane Durixo Early Tests (in1929), Showing the Laboratories First Modern Receiver and Transmitter in Operation in theForeground, While Measurements of Field Strength of the Associated Ground Station Are inProgress Beyond. The Pilot and Co-Pilot Are Just \isible at the The Bell Laboratories Tri-mhi m 1-i\i\(, L \i;(ikaii)k\ M SxuDits Over \tw York City. A\ I \ I Km i 1 I I IIIn\C

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Keywords: ., bookauthoramerican, bookcentury1900, bookdecade1920, bookyear1922