NEW YORK SPECTATOR, March 2, 1816  Page 3 has an interesting article of a new devise called a: "Life-Saving Mattress" with a prefacing note that it is: "...not only for all the uses of a common mattress, but also for the preservation of life in cases of shipwreck.", followed by: "A Description of the Patent Life-Saving Mattress" (see).
Four pages, nice condition.