Blue Mountain Delaware water gap. Site of the slate quarries of the New Jersey slate mining, manufacturing & transportation company, Warren Co. N.J. - sketched by W.B. Whitecar ; P.S. Duval LCCN2014645347, between 1860 and 1869

Title: blue mountain delaware water gap. Site of the slate quarries of the new jersey slate mining, manufacturing & transportation company, warren co. N. J. / sketched by w. B. Whitecar; p. S. Duval & son's lith. Phila. Abstract/medium: 1 print: lithograph; sheet 17. 5 x 26 cm. Genre: Lithograph. Date: between 1860 and 1869. Collection: Popular Graphic Arts.