The collection consists of James M. Slater's diary and bible and Frank Haviland's photographs of steel structures.
The photographs are black and white, approximately 145 x 90mm of steel structures. The majority of them are related to the Standard Steel Construction company. Many of the photos have notations on the back, most of it in short form; it is assumed the notations are related to the construction. There is one photo of a group of nine men, none of them are identified, but it is titled “Standard Steel, Port Robinson Ont.” The photo is circa 1912. There are three photographs of the Falls View Bridge when it collapsed in 1938 which were taken by John A. Cowan of Welland and sent to Haviland. A few of the older photos also bear his initials.