Louis' Mixed Drinks with Hints for the Care & Serving of Wines by Louis Muckensturm (1906, p.53)

14 ouncesdry gin — Dry ginbase
10 ouncesdry vermouth — French vermouthbase
0.5 liqueur-glassorange bitters — Orange bittersbitter
1 liqueur-glasscuracao — Curacaomodifier
  1. Combine in a bottle, keep cool, shake well, and pour over ice before serving.

Ice: Ice