Tredgold, Thomas: The principles and practice and explanation. The principles and practice and explanation of the machinery of locomotive engines : in operation on the several lines of railway : exemplified in the examples constructed by Bury, Curtis, and Kennedy, Liverpool. T.R. Crampton, London. [...] / Thomas Tredgold. London : John Weale, MDCCCL.-MDCCCLIII. [1850-1853] : 1(1850-). London : John Weale, MDCCCL. [1850]