Twenty-first ward, Pittsburgh. (1872)Atlas of the cities of Pittsburgh, Allegheny, and the adjoining boroughs. From actual surveys & official records, compiled & published by G.M. Hopkins & Co. 320 Walnut St., Philadelphia. 1872. Assistant surveyors: H.W. Hopkins, W.S. MacCormac, Edward Vansciver, Weston R. Smith, Samuel Huff, Robert Foust, L. Cunningham. Assistant publishers: Richard Clark, M.S. Converse, S.T.C. Bell, L.J. Richards, J.C. Martin, W.G. Carter, Isaac Borneman, James Wilson, A.R. Whipple. Engraved by Edward Busch, 320 Walnut St. Entered ... 1872 by G.M. Hopkins ... Washington D.C. F. Bourquin Lith. 320 Chestnut St. PhilaWard 21

Chicago citation style
G.M. Hopkins & Co. Twenty-first ward, Pittsburgh. (1872),Atlas of the cities of Pittsburgh, Allegheny, and the adjoining boroughs. From actual surveys & official records, compiled & published by G.M. Hopkins & Co. 320 Walnut St., Philadelphia. 1872. Assistant surveyors: H.W. Hopkins, W.S. MacCormac, Edward Vansciver, Weston R. Smith, Samuel Huff, Robert Foust, L. Cunningham. Assistant publishers: Richard Clark, M.S. Converse, S.T.C. Bell, L.J. Richards, J.C. Martin, W.G. Carter, Isaac Borneman, James Wilson, A.R. Whipple. Engraved by Edward Busch, 320 Walnut St. Entered ... 1872 by G.M. Hopkins ... Washington D.C. F. Bourquin Lith. 320 Chestnut St. Phila,Ward 21. 1872. Retrieved from the Digital Public Library of America, https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~28609~1120493. (Accessed December 15, 2018.)
APA citation style
G.M. Hopkins & Co, (1872) Twenty-first ward, Pittsburgh. (1872),Atlas of the cities of Pittsburgh, Allegheny, and the adjoining boroughs. From actual surveys & official records, compiled & published by G.M. Hopkins & Co. 320 Walnut St., Philadelphia. 1872. Assistant surveyors: H.W. Hopkins, W.S. MacCormac, Edward Vansciver, Weston R. Smith, Samuel Huff, Robert Foust, L. Cunningham. Assistant publishers: Richard Clark, M.S. Converse, S.T.C. Bell, L.J. Richards, J.C. Martin, W.G. Carter, Isaac Borneman, James Wilson, A.R. Whipple. Engraved by Edward Busch, 320 Walnut St. Entered ... 1872 by G.M. Hopkins ... Washington D.C. F. Bourquin Lith. 320 Chestnut St. Phila,Ward 21. Retrieved from the Digital Public Library of America, https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~28609~1120493
MLA citation style
G.M. Hopkins & Co. Retrieved from the Digital Public Library of America <https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~28609~1120493>.
Note: These citations are programmatically generated and may be incomplete.