In the current issue of Mixology Magazine, the premier German-language bartending magazine, I have a big story about the Aviation cocktail.
It covers a bunch of the history of the cocktail - how it originally had creme de violette and then the recipe was probably copied incorrectly and it was not made the right way again for decades. (I wrote a brief blog entry about that here.)
Then it delves into bartenders' preferred types of gins, maraschino liqueurs, and creme de violette, plus a whole bunch of variations on the cocktail. It includes recipes from Sierra Zimei, Humberto Marques, Brendan Dorr, Jacob Grier, and Olivier Jacobs.