The Hoffman House Bartender's Guide by Charles S. Mahoney (1905, p.160)

4 dashesAbsinthe — Absinthebase
0.5 wine glassgin base
2 dashessyrup base
2 dashesAngostura bitters — Angosturabitter
2 dashesorange bitters bitter
1Olive — Optional.garnish
2 dashesvermouth — Vermouthmodifier
ice — Use mixing glass filled with ice.other
  1. Stir the syrup, orange bitters, Angostura, vermouth, absinthe, gin, and ice with a spoon.
  2. Strain into a cocktail glass and serve with or without an olive.

Garnish: Optional olive

Ice: Ice

See also: Du Barry Cocktail, Tuxedo Cocktail

Source says it may be served with or without olive.