Fonds consists of material relating to J. Cooke Concrete and to William Jacob Cooke, and includes deeds and other legal documents relating to lands; correspondence; ephemera; news clippings; maps and plans; notes on biographical and administrative history; photographs; and artifacts.

Colour slides depicting various sights in and around Sudbury in the late 1950s and early 1960s. Some of the slides are numbered suggesting they were part of a larger slideshow on Sudbury. Slides may have been collected to support claims related to the city expropriation of properties on Borgia Street in the 1960s. Slides were produced by various studios in Ontario.