This accession comprises but a small part of Frank A. Weer's collection, and is one of many pieces distributed to a variety of railroad and local historical institutions when he was forced to downsize his collection in the fall of 2016.

The bulk of the material is in some way related to the Pennsylvania Railroad (PRR). Other PRR materials were taken by the Pennsylvania Railroad Technical & Historical Society, while most of the Reading Company material went to the Reading Company Technical & Historical Society and a variety of Philadelphia area repositories.

The materials have been divided into two series: Files and maps. The files consist of a variety of ephemera - track diagrams, employee timetables, reports and financial statements, small divisional maps, legal agreements, briefs of title, and corporate histories. Items of note include: a Photostat of a 1796 letter from Robert Fulton to Pennsylvania Govenor Thomas Mifflin on canals, the original of which is in the Reading archive; floor plats of Philadelphia's Broad Street Station; deeds for the air rights on which to build the Farley Post Office in New York and the Daily News printing plant in Chicago; statistics on travel to the Army-Navy Game; sketch proposals for building sports stadiums on air rights at West Philadelphia, Sunnyside Yard and Flatbush Avenue, Brooklyn; briefs of title for land acquired by the PRR through purchase of the Pennsylvania Canals and state railroads; a memoir of the early history of the Danville & Pottsville Railroad; notes and maps on the Delaware & Raritan Canal; and notes and maps on the holdings of the PRR's water company subsidiaries.

The maps are in several formats. The first are blueprints from the railroad companies' own manuscript engineering drawings, the originals of which have probably disappeared. These include system maps, close-up maps of cities and urban areas with their industries, and detailed track maps. The second are commercial maps collected by the companies for informational purposes, often with the railroad lines highlighted in colored ink. The third are Coast & Geodetic and state geological survey maps that may have been collected by the railroads or by Mr. Weer personally. There are also drawings of PRR business car No. 120 and the ferry boat "Jersey City."

Cities represented are: Akron, Altoona, Baltimore, Bristol (Pennsylvania), Camden, Cape Charles, Carlisle, Chambersburg, Chester, Chicago, Cincinnati, Dayton, Detroit, Erie, Grand Rapids, Harrisburg, Jersey City, Lemoyne, Louisville, Logansport, New York, Newark (New Jersey), Niles (Ohio), Norfolk, Olean, Philadelphia, Pittsburgh, Saint Louis, Sandusky, Terre Haute, Toledo, Trenton (New Jersey), York, Youngstown, Warsaw (Indiana) and Washington (D.C).

Maps of note include a track plan of West Philadelphia showing the West Philadelphia Shops and station before 30th Street Station was built; a map showing the damage caused by Hurricane Agnes in 1972; Conrail tonnage maps; detailed ground plans for each of the three levels of Grand Central Terminal; flat and axonometric maps of the New York Central's West Side Improvement, part of which became the High Line park; and a Pennsylvania Department of Health map showing streams polluted by coal mine drainage.