The Hoffman House Bartender's Guide by Charles S. Mahoney (1905, p.157)

2 dashesAbsinthe base
1 dashBoonekamp bitters — Boonckamp bittersbase
1 ponydry gin base
0.25 sliceOrange — Serve with quarter slice of orange.garnish
1 ponyFrench vermouth — French Vermouthmodifier
ice other
2 dashesgum syrup sweetener
  1. Build the Boonekamp bitters, absinthe, gum syrup, French Vermouth, dry gin, and ice.
  2. Serve in a cocktail glass with a quarter slice of orange.

Garnish: Quarter slice of orange

Ice: Ice

The source line is terse, so the record stays close to the printed composition.

See also: Eagle Cocktail, Tuxedo Cocktail