3 Men on river structures with ladders and levers-nypl.digitalcollections.

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Three men on river structures with ladders and levers. Retrieved from http://digitalcollections.nypl.org/items/06e13eb0-8a8e-0131-0778-58d385a7bbd0

Three men on river structures with ladders and levers ” New York Public Library Digital Collection.

Three men on river structures with ladders and levers. Retrieved from http://digitalcollections.nypl.org/items/06e13eb0-8a8e-0131-0778-58d385a7bbd0