Thayer, Horace Holden

Horace Holden Thayer papers, 1893–1943.
16 boxes, 1 folder (6.41 linear feet).
About Horace Holden Thayer

Horace Holden Thayer was a naval architect and marine engineer. His office was located in the Witherspoon Building, Philadelphia. Thayer was a graduate of Cornell University with a degree in Mechanical Engineering, specializing in naval architecture. He was Assistant Naval Architect and later Naval Architect of the U.S. Shipping Board Emergency Fleet Corporation during the First World War. He was a member of the Society of Naval Architects and Marine Engineers, the Society of Naval Engineers, the Society of American Military Engineers, and the American Society for Testing Materials.

About the collection

This is a collection of records related to Thayer’s work for the U.S. Shipping Board Emergency Fleet Corporation during World War I. These records include correspondence and memoranda; general, special, and technical orders to personnel; plans, specifications, and technical data on ships and equipment; a list of ships (wood and steel) built by the U.S. Shipping Board; progress charts for Emergency Fleet ships; and contracts for ships built by the Emergency Fleet Corporation. Other records include: correspondence related to a floating drydock built for the Venezuelan government around 1911; survey and damage reports; and plans and specifications for various ships. Other papers include: investment records; a small amount of personal correspondence; data used by Thayer to prepare a series of articles on shipbuilding materials published in Marine Engineering and Shipping Age, 1922; and work journals with notes, technical data, calculations, and several sketches.

  • United States Shipping Board Emergency Fleet Corporation
  • Marine engineering–United States
  • Naval architecture–Designs and plans
Types of material
  • Correspondence
  • Notebooks
  • Ships plans
  • Sketches
  • Technical reports
  • Specifications
Related collections
  • ISM: Pusey and Jones (1982.139)
  • check to make sure we “relate” all the appropriate Thayer material.
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