Approximately one hundred fifteen glass negatives of diesels.
Photographs Plowden took of bridges, aqueducts and viaducts all over the United States and a few in Canada. The photographs are of various types of bridges: truss, suspension, covered. Some photographs feature close-up details of architectural elements, such as arches, chains, towers and ornamentation.
The collection contains stereographs by various makers. Most depict trains, railroads and railroad related subjects such as railyards, railroad bridges, elevated trains.
Company records, including specifications, drawings and plans, photographs, and other miscellaneous archival material.
Papers documenting Page Tractor Company and its parent company, Pioneer Manufacturing. The papers include customer inquiries and the responses to them, drawings and blueprints, invoices, trade literature, parts catalogs and price lists, and instruction manuals.
Glass plate negatives documenting the Niagara Railroad and its architectural structures.
Three volumes of business records from the Cordelia Furnace, Cordelia, Pennsylvania, and its store.
Fifty-eight titled photographs taken by Sir Robert Cotton, of scenes along the C & O Canal, including locks, acqueducts, canal station; and cyclists and joggers along the towpaths.
A collection of postcards accumulated by Miller on the subject of bridges, and of photographic slides of bridges all over America and the world. Some of the postcards are used but most are not. The slides are captioned.
Photoprints and negatives documenting the construction of several Washington, D.C. bridges. The Washington Aqueduct Bridge is the subject of most of the images. The Washington Channel Bridge, the Potomac Highway Bridge, and the 11th Street Bridge are also included among the images. Additionally, there is a letterpress book, an employee time book, a...