ScientificAmerican1891-03-21.jpg Popular Mechanics 1922-05ThumbnailsScientific American 1893-06-10Popular Mechanics 1922-05ThumbnailsScientific American 1893-06-10Popular Mechanics 1922-05ThumbnailsScientific American 1893-06-10Popular Mechanics 1922-05ThumbnailsScientific American 1893-06-10Popular Mechanics 1922-05ThumbnailsScientific American 1893-06-10
The new steel flating derrick at the Brooklyn Navy Yard.



Source: Steve Kirch, collector, and creator of a great website about SCIENTIFIC AMERICAN in the past

Restoration by: magscanner