Riparian Architecture

I’m not entirely sure of what project this is an architectural rendering, but I suspect it is an unbuilt project designed by Cass Gilbert for Blackwell’s Island in the East River, later known as Welfare Island and now Roosevelt Island. There were a number of schemes before the First World War (Thomas J. George was the author of one) for the construction of a new civic center for New York on the island, which is located right in the middle of the five boroughs.