The author argues that the widespread conviction that oral sources for fairy tales preceded written fairy tales grows from regressive argumentation. Oral tellings develop in conjunction with print and school culture. This is especially true of fairy tales and is well documented in travel literature and in memoirs.
Bottigheimer, Ruth B.. "Semiliterate and Semi-Oral Processes." Marvels & Tales 21.1 (2007). Web. <https://digitalcommons.wayne.edu/marvels/vol21/iss1/8>.