Scope and Contents
The collection documents the work of the John A. Roebling's Sons Company, builders of bridges. The materials consist primarily of photograph albums documenting a variety of bridges, mostly in the United States. The documentation also includes specifications, patents, and reference materials about the engineering process of building bridges and bridges in general.
Series 1, Historical background materials, 1895-1958, is divided into two subseries: Subseries 1, John A. Roebling's and Sons Company materials, 1895-1949 and Subseries 2, Newsletters, 1929-1931.
Subseries 1, John A. Roebling's and Sons Company materials, 1895-1949, contains a variety of items related to the company such as historical narratives, correspondence, price lists, testing data, and a ledger with cost estimates. The correspondence is partially bound (pages 1 to 104) from a letter press book (handwritten and typescript) belonging to John A. Roebling's and Sons Company. William Hildebrand and Charles G. Roebling are the chief correspondents. The correspondence documents daily activities related to the design and erection of bridges as well as finances and supplies. Charles G. Roebling's notebook, undated, contains calculations and notes about various bridge projects.
Subseries 2, Newsletters, 1929-1931, contain copies of Blue Center and Wire Engineering, which were John A. Roebling's and Sons Company publications intended for employees. The newsletters were apparently used as scrapbooks, with black-and-white photographs pasted into the pages. Found among the pages of Blue Center are photographs of the Hudson River Bridge and in Wire Engineering, there are photographs of the Maysville, Kentucky Bridge.
Series 2, Photographs, 1926-1975, comprises the largest series in the collection. The photographs are primarily black-and-white and document aerial tramways, tramways for logging or mining, chair lifts, ski lifts, floods, and bridge construction projects. The latter makes up the majority. Most photographs were assembled into albums with corresponding captions and dates, and almost all of the photographs document bridges in the United States. There is one exception, the Yauricocha Tramway in Peru. In some instances, the captions are recorded on the back of the photographs, and others were recorded on album pages. The series is arranged alphabetically by name of bridge and/or project.
Series 3, Specifications, 1855-1962, consists of printed textual documents (both bound and loose) that contain information for bidders, proposals, contracts, and bonds, and the detailed specifications. This series is arranged alphabetically by bridge name.
Series 4, Reports, 1928-1938, contains bound reports (both progress and final) detailing problems, requirements, research, manufacture, plant installation, cable equipment, strand adjustments, and Roebling Company developments. This series is arranged alphabetically by bridge/and/or project.
Series 5, Patent materials, 1849-1952, consists of issued patents (to a variety of individuals) for cable and cable appliances, cables, and cable apparatus, cableways and tramways, and grips. The patents are arranged by subject area, then by patent number.
Series 6, Reference materials, 1836-1964, contains a wide range of materials—articles, biographical files, drawings, photographs, newspaper clippings, advertising, correspondence, notes—documenting all aspects of bridges. This series is arranged alphabetically by topic.