My recipe remains pretty faithful to Craddock's classic 1930s proportions, but in line with modern bartending conventions, I now disregard Craddock's instructions...
Even though this cocktail works out well, I have a feeling that the "3 Dashes Crème de Violette" is a typesetting error, and that line should have been in the next cocktail in the book, the Aviation, from whence it is missing.
Sorry, I think you misunderstand me. The typo is not here in your guide, but in Craddock's 1930 Savoy Cocktail Book. Ensslin's Recipes for Mixed Drinks has the Crème de Violette in the Aviation, and the Savoy plagiarizes heavily from Ensslin's book.
The above 3 dashes creme de violette are correct. We have two versions of the Aviation, one with The Savoy spec (which as per the book omits creme de violette) and my own version which does include creme de violette.