Source notes:Masson
Verify the title if possible. The title here is taken from the bibliography in Leland D. Baldwin, The Keelboat Age on Western Waters. Source:Fleming-port agrees except for spelling.
Source:Dahlinger, p. 79: "15a. Note.—William Masson, who prepared this plan, was apparently the sailmaker who in the early part of the Nineteenth Century resided on Water Street, between Smithfield Street and Cherry Alley. The Pittsburgh Directories for both 1815 and 1819 have him as residing at this place, and according to a deed filed in the Recorder's Office of Allegheny County he had purchased the property in 1813. The belief that he was the author of the plan is strengthened by the fact that the plan contains pictures of eleven sailing ships of various classes, all of which are labeled as having been built at Pittsburgh or in the vicinity, and about which hardly anyone could have had knowledge, unless he was intimately connected with shipbuilding."
