Postcard of New York City Skyline at Night. ca. 1916, SKY-LINE BY NIGHT, NEW YORK CITY. Showing skyline of Manhattan from Jersey City. Manhattan Island 19, 65 square miles, was purchased in 1626 from Indians for about $24,00, land value now $4,020,000,000, total realty value with improvements, is $6,075,000,000, an average of $432,000, per acre. The Island has 2,331,542 inhabitants, the lower end has an office population of 400,000 land there is worth from $200 to $600 per square foot and office