Cable Making of the East River Bridge

1877 Scientific American  
composed of nineteen strands, and each strand is made of 260 Itteel wires. The size of wire now used is number 7. Num ber 8 was first employed, but the larger size was prefe,rred.
doi:10.1038/scientificamerican08041877-63 fatcat:cf7p4qiqgjhvdkal3zsjxbmpaq