Robert A. Otter
- (2000): William and Edward Mackenzie as Railway Contractors: The Evidence of J. H. Watel's Office Diaries from 1849 and 1850. In: Transactions of the Newcomen Society, v. 72, n. 2 (January 2000).
- (2004): The Construction of Dry Docks to World War I: The Evidence ofThe Engineer. In: Transactions of the Newcomen Society, v. 74, n. 2 (January 2004).
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