Herman Haupt
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Schexnayder, Cliff (2007): Herman Haupt the Pennsylvania Railroad Experience. In: Practice Periodical on Structural Design and Construction, v. 12, n. 1 (February 2007), pp. 9-15.
https://doi.org/10.1061/(asce)1084-0680(2007)12:1(9)
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Schexnayder, Cliff J. (2007): Herman Haupt Tunneling the Hoosac…Edward R. Ardery. In: Practice Periodical on Structural Design and Construction, v. 12, n. 2 (May 2007), pp. 61-74.
https://doi.org/10.1061/(asce)1084-0680(2007)12:2(61)
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Kurrer, Karl-Eugen (2018): The History of the Theory of Structures. Searching for Equilibrium. 2nd edition, Wilhelm Ernst & Sohn Verlag für technische Wissenschaften, Berlin (Germany), ISBN 978-3-433-03229-9, pp. 1005.
https://doi.org/10.1002/9783433609163