Standardising Time: Railways and the Electric Telegraph, su sciencemuseum.org.uk, Science Museum, 4 ottobre 2018.
«LONDON TIME is kept at all the Stations on the Railway, which is about 4 minutes earlier than READING time; 5½ minutes before STEVENTON time; 7½ minutes before CIRENCESTER time; 8 minutes before CHIPPENHAM time; 11 minutes before BATH and BRISTOL time; and 14 minutes before BRIDGEWATER time.»
