Café Royal Cocktail Book by W. J. Tarling (1937, p.173)

0.33 partorange juice acid
2 dashesAngostura bitters base
0.33 partgin — Dry Ginbase
0.33 partrye whisky — Rye Whiskybase
2 dashesdry vermouth — French Vermouth (N.P.)modifier
  1. Shake well.

Invented by U. Walton.