Eliza Leslie (1839). “Miss Leslie's Behaviour Book: A Guide and Manual for Ladies as Regards Their Conversation; Manners; Dress; with Full Instructions and Advice in Letter Writing [!]; Receiving Presents; Incorrect Words”, p.259
Ralph Waldo Emerson, Robert Ernest Spiller, Alfred Riggs Ferguson, Joseph Slater, Jean Ferguson Carr (1971). “The Collected Works of Ralph Waldo Emerson: Nature, addresses, and lectures”, p.241, Harvard University Press