The Hoffman House Bartender's Guide by Charles S. Mahoney (1905, p.155)

2 dashesgum syrup — gumbase
0.33Scotch whisky — Scotch whiskeybase
0.33Tom gin — Old Tom ginbase
2 dashesorange bitters — Orange Bittersbitter
1garnish — cherry or olivegarnish
0.33Italian vermouth — Italian Vermouthmodifier
  1. Combine the gum, orange bitters, Italian Vermouth, Scotch whiskey, and Old Tom gin.
  2. Serve in a cocktail glass with a cherry or olive, as desired.

Garnish: Cherry or olive

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

See also: Trilby Cocktail, Tuxedo Cocktail