Gin Buck

Down the Hatch by "Paul" (1920, p.12) — Down the Hatch 1920

1. Squeeze the lime over the ice and add the gin.
2. Fill the glass with ginger ale.

Ice: 1 lump ice

This matters because it preserves the buck line clearly and simply inside the 1920 long-drink field.

The direct ginger-ale lengthening is the defining feature here.

The Old Waldorf-Astoria Bar Book by Albert Stevens Crockett (1935, p.108)

1. Build in a Collins glass and serve.

Ice: Ice

Peychaud's New Orleans Cocktails by John Held Jr. (1935, p.15)

1. Build in a glass over ice, fill with ginger ale, and serve.

Ice: Ice

The Artistry of Mixing Drinks by Frank Meier (1936, p.72)

1. Build over ice in a tumbler, fill with ginger ale, stir, and serve.

Ice: Ice