By the early 20th century, lunar nomenclature had become confused. Major maps made by Madler, Schmidt and Neison (and other smaller maps) had applied names and letters to craters and other features that were generally consistent from the earliest to the latest Moon mapper, but not always. Suggestions were made to scrap the existing names and apply a new nomenclatural scheme, perhaps combining letters and numbers - almost like a modern license plate! Fortunately, the traditional system - with all its lore and links to lunar history - was maintained, and Mary Blagg (1858-1944) made the necessary intercomparison of the main maps as the first step in bringing order and agreement to lunar names.
