"Metalliferous tracts of England and Scotland" contributed by Fredk. Burr; Kress Lib. Pioneer period of English railroads, p. 44; Publication: [London] : J. & C. Walker, 9 Castle St. Holborn
Ggeological map of England, Wales, and part of Scotland, showing also the inland navigation, with the railroads & principal roads, hmap1838w3, Hargrett Rare Book and Manuscript Library, The University of Georgia Libraries.