The Ideal Bartender by Tom Bullock (1917, p.46) — Chicago Style

0.5 limeLime juice (fresh) — Lime Juicebase
2 jiggersOld Tom gin — Burnette's Old Tom Ginbase
1 teaspoonfulsugar — Bar Sugarsweetener
  1. Use a large mixing glass filled with lump ice.
  2. Stir well, strain into a cocktail glass, and serve.

Ice: Lump ice

This matters because Bullock preserves a specific Chicago-style Gillette rather than treating the lime-and-gin family as generic.

The source keeps it stirred despite the lime, which is an important period service detail.

See also: Bacardi Cocktail, Stone Sour