"Elevated RR at Chatham Sq, N. Y." 

This appears to be the upper level of Chatham Square Station, which served trains that were going to and from City Hall. It closed permanently on December 31, 1953.

Published by International Stereoscopic View Company and I would guess that it was photographed by R. Y. Young sometime in 1904 or 1905.

Standard-size stereograph, measuring about 3.5" x 7".

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