| Here is page one of a six-page cover article by Alden P. Armagnac entitled "Wreckproofing The Railroads." It was published originally in the July 1951 issue of "Popular Science" magazine, page 50. Photo Caption: "Three-speed governor on locomotive axle is key device of automatic speed control. Pennsylvania program will equip 307 Diesel, electric, and steam locomotives for this system." |
| Date:
7/1/1951 |
Location:
Philadelphia, PA Map  |
Views:
161 |
Collection Of:
 
Thomas C. Ayers |
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Author: Thomas C. Ayers
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| Picture Categories: Signal,Passenger |
This picture is part of album: USA: Armagnac ~> "Wreckproofing The Railroads" |