The National Railroad Passenger Corporation (Amtrak) first began operations on May 1, 1971, following the passage of the Rail Passenger Service Act of 1970. Through the passage of the Railroad Revitalization and Regulatory Reform Act of 1976, Congress authorized the Northeast Corridor Improvement Project (NECIP), a comprehensive program with the goal of improving intercity rail passenger service between Washington, D.C., through New York City, to Boston, the most heavily used passenger train corridor in the United States. Records related to Amtrak's involvement in the NECIP include preliminary and ongoing technical and financial reports, leases and agreements, as well as minutes, agendas, and other working project files.

The Lehigh Valley Railroad Company was one of the major anthracite railroads and formed a secondary trunk line between Jersey City, New Jersey and Buffalo, New York. Their records consist of minute books, corporate histories, voluntary reorganization plans, and an illustrated brochure on Claremont Terminal.

Louis T. Klauder and Associates (LTK) is a professional rail transportation engineering consulting firm. LTK were hired to work as consulting engineers for a joint project of the United States Department of Transportation and Pennsylvania Railroad called the Northeast Corridor Demonstration Project. This collection contains aerial photographs of the Northeast Corridor railroad route from New York to Boston taken between 1951 and 1965. These images were used to aid in the project. These aerial photographs make up a bulk of the collection. There are several sets of images that show train station exteriors along several routes on the Northeast Corridor. Thirty-eight photographs show the projects test track at Pueblo Army Depot in Colorado. There are four press photographs for Inflight Motion Pictures Inc. and a few renderings of proposed trains.

Founded in 1921, the Philadelphia firm of Louis T. Klauder and Associates specializes in the design and evaluation of railroad and rail transit systems, including equipment, infrastructure and operations. Their collection consists of selected job files covering Klauder's work for the Federal Office of High Speed Ground Transportation in developing the first U.S. high-speed rail project in the Boston-Washington Northeast Corridor during the late 1960s and early 1970s. The collection also includes smaller job files on tangential rail projects and a series of files Robert B. Watson, former Northeast Corridor project coordinator for the Pennsylvania and Penn Central Railroads, brought with him when he joined Klauder in 1972.

Robert Bruce Watson (1931-) was the Coordinator for the Northeast Corridor Project for the Penn Central Railroad. This collection contains photographs and postcards of the high-speed equipment used in the Northeast Corridor Demonstration Project, including exteriors, interiors and details of trucks and other parts. There are several photographs of speakers at a train dedication event in 1996.

Professional career files of mechanical engineer Robert B. Watson (1931-) documenting his work on the development of high-speed trains in the years between 1966 and 1998, especially his involvement in the Northeast Corridor Demonstration Project and the development of the first generation "Metroliners."