Read proposed an etymology of OK in "Old Kinderhook" in 1941.[15] The evidence presented in that article was somewhat sparse, and the connection to "Oll Korrect" not fully elucidated. Various challenges to the etymology were presented; e.g., Heflin's 1962 article.[16] However, Read's landmark 1963–1964 papers silenced most of the skepticism. Read's etymology gained immediate acceptance, and is now offered without reservation in most dictionaries.[17] Read himself was nevertheless open to evaluating alternative explanations: