[New York : Sanborn-Perris Map Co., Limited, 1900]
Includes text. Union is a former town in Hudson Co., N.J.; in 1925 it merged with West Hoboken to form Union City. cf. Merriam-Webster's geographical dictionary, 3rd ed. Historic Maps copy has sheets 23-35 of Hudson County series, showing Union.
Real property—New Jersey—Union City—Maps and Union City, N.J.—Maps
Princeton: Historic Map Division, Special Collections, Firestone Library