The Dumbarton Steamboat Company was one of the earliest steamboat companies in the world and in its different reincarnations lasted for almost a century. It served the traffic between the town of Dumbarton and the city of Glasgow, was intimately involved in the lucrative tourist trade to Loch Lomond, and in doing so, took advantage of the oft disputed charters that allowed shipping registered at Dumbarton free access to the Glasgow harbour. This article is heavily based on a summary of the sederunt book of the company that is presented in Thomson’s “Affairs of an Early Steamboat Company” (1932). Further details come from Hume and Moss’ “A Bed of Nails,” and several of Donald MacLeod’s books; “God’s Acres of Dumbarton,” (1888), “Castle and Town of Dumbarton,” (1877), “Dunbarton Ancient and Modern,” (1892), and “Loch Lomond Steamboat Companies,” (1888). Additional information comes from...