John, that's excellent, and I had seen that earlier. Your discovery of that, along with Lighter's observation that it would have to be after the Civil War, are what led me to say late 1860s. The reason I don't yet want to say 1868 specifically is because that note is for the Rocket's voyage to Sumatra. Adams sails in the Dublin prior to that, so the Dublin reference may apply to "1865-1868." And Adams continues to sail after the Sumatra voyage. His discussion of shanties is general, and must be a composite of his experiences over several years. I I figured "circa late 1860s" would be safer (?)