"Locomotives We Have Lost" by Will Adams is a hardback book focused on railwayana, specifically featuring British Rail (1948-1997) as the company/era/region. The book likely delves into the history and significance of various locomotives that are no longer in existence, making it a valuable addition for collectors and enthusiasts of transportation memorabilia. With a focus on the British Rail era, this book is sure to provide insights into the iconic railroads of the past and the impact they had on the industry.