""The Double Gauge Railway System: Danger To Travelers And Injury To Shareholders, Threatened By A Combination Of The Broad And Narrow Gauges"" is a book written by Samuel Sidney in 1847. The book discusses the potential dangers of the double gauge railway system, which was a combination of both broad and narrow gauges on the same track. The author argues that this system poses a threat to travelers and is also detrimental to the interests of shareholders...