- Frederick William Bidder, civil engineer: notebook 1929
- John Provis, civil engineer: notebooks rel to Menai Suspension Bridge, Holyhead Road and Bangor-Chester Road c1820-30
- Thomas Telford, civil engineer: letter (1) to Thomas Eyre Lee rel to Birmingham and Liverpool Junction Canal 1832
- John Alan Williams, civil engineer: papers rel to Ironbridge restoration c1970
- Coode, Son & Matthews, consulting engineers, London (addnl): records
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Institution of Civil Engineers