Notes
1 Walter Pickles, Our Grimy Heritage: a fully illustrated study of the factory chimney in Britain, illustrated. (London: Open Gate Press, 1971), pp 98. [Hardback]. ISBN 978-0900000737.
2 Frederick Travis Dibnah, Fred Dibnah Steeplejack, illustrated. (Cheltenham, Gloucestershire: Line One Publishing, 1983), pp 96. [Hardback]. ISBN 978-0907036173.