The 1985 GWR 150 Old Oak Common Open Day brochure is a piece of paper railwayana from the United Kingdom, specifically related to the Great Western Railway. This brochure offers a glimpse into the history and events of the railway industry during that year, making it a valuable collectable for enthusiasts and collectors of railwayana. The brochure captures a significant moment in British transportation history, showcasing the significance of the GWR 150 Open Day.