"Plan of the Drummond Colliery." This image was published in Harper's Weekly (New York), 7 June 1873, p. 489.
Date: 1873
Artist: Thomas Doran
Reference: Nova Scotia Archives Prints Old & Rare Collection: 1997-233 no. 8
Nova Scotia Archives — https://archives.novascotia.ca/meninmines/archives/?ID=658
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