Eighteenth and Nineteenth wards, 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. PhilaWards 18-19

Chicago citation style
G.M. Hopkins & Co. Eighteenth and Nineteenth wards, 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,Wards 18-19. 1872. Retrieved from the Digital Public Library of America, https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~28607~1120491. (Accessed December 12, 2018.)
APA citation style
G.M. Hopkins & Co, (1872) Eighteenth and Nineteenth wards, 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,Wards 18-19. Retrieved from the Digital Public Library of America, https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~28607~1120491
MLA citation style
G.M. Hopkins & Co. Retrieved from the Digital Public Library of America <https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~28607~1120491>.
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