Cheerio! A Book of Punches and Cocktails by Charles (1928, p.23)

1 partorange or grapefruit juice acid
1 partScotch or rye whiskey — Scotch or Ryebase
1 dashAngostura bitters — Optional enhancement.bitter
ice — Shake with ice.other
  1. Place the whiskey and orange or grapefruit juice in a shaker with ice.
  2. Shake well, add a dash of Angostura if desired, and serve.

Ice: Ice

See also: Whiskey Sour, Palm Beach Special

Source says Angostura enhances the delicacy of the taste.