Cocktails Bar La Florida by Constante Ribalaigua Vert (1934, p.134)

2 ouncescognac — Tres Copas cognacbase
6 ouncesmilk — fresh milkdilution
cinnamon — on topother
2 wholeegg — eggsother
1 spoonfulsugar sweetener
  1. Shake well and strain; then serve with powdered cinnamon on top.

Ice: Cracked ice

The Old Waldorf-Astoria Bar Book by Albert Stevens Crockett (1935, p.107)

1 wholeegg base
spirit — rum or brandy or whiskeybase
milk — fill three-quartersdilution
0.5 spoonsugar sweetener
  1. Shake well and grate nutmeg on top.

See also: Flips