The fonds consist of a large volume of detailed plans of bridges and culverts built between 1916 and 1946 on the following branches of the PEI Railway: Souris, Georgetown, Montague, Charlottetown, Subdivision, Tignish, Cape Traverse, Murray Harbour, Elmira and Vernon. A few include remarks and/or specifications. Also included are photographs taken during the building of the Hillsborough Bridge, 1902-1905.

The collection consists of right of way plans for the Murray Harbour, Mt. Herbert, Elmira, and Vernon subdivisions of the Canadian Government Railways and Prince Edward Island Railway, 1916, and a track profile of the Georgetown spur of the Canadian National Railroad, 1946. Trains running according to an established timetable began in April 1875 from Charlottetown to Summerside, Georgetown, and Souris return and from Summerside to Tignish. The branch line to Murray Harbour and intermediate stations was apparently laid around the turn of the century although rail connection with Charlottetown was not established until the Hillsborough Bridge was completed late in 1905. The line was resurveyed in 1915.