Andrew Onderdonk (30 August 1848 - 21 June,1905) was a construction contractor who worked on several major projects including the San Francisco seawall in California and the Canadian Pacific Railway in British Columbia.He was born in New York to an established Dutch family. He received his education at the Troy Institute of Technology. He married Sarah Delia Hilman of Plainfield, New Jersey. After starting his career surveying townsites and roads in New Jersey, … Wikipedia
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