Family

The Mixicologist by C. F. Lawlor (1895, p.67) — C. F. Lawlor 1895

0.5 wholemilk — milkbase
0.5 wholeSeltzer water — seltzer waterdilution
  1. Fill the glass half full of milk and the remaining half with seltzer water.
Nose
Cool milk and faint mineral fizz give a mild aroma.
Palate
It is extremely soft and simple, but historically useful as part of the bar's non-alcoholic repertoire.
Finish
The finish is creamy, light, and gently sparkling.
Summary
A mild temperance refresher from the softer edge of the soda-glass world.

Entries like this matter because they stop the ontology from pretending the bar universe was purely alcoholic. The non-alcoholic and quasi-restorative repertoire shaped taste and service habits too.

Coldness and freshness are the whole drink. There is nowhere for flaws to hide.

Compared with Snow Flake, this is even plainer and more explicitly temperance-coded.

Daly's Bartenders' Encyclopedia by Tim Daly (1903, p.96)

0.5 glassseltzer base
milk — Fill the balance with milk; always add last.dilution
  1. Half fill a medium size glass with seltzer.
  2. Fill the balance with milk, adding the milk last so the foam does not run over the top.

This is a useful bar-service checkpoint for an extremely plain dairy long drink still treated as worthwhile mixed-drink knowledge.

The order of build is the whole point of the recipe.

Bartenders' Guide: How to Mix Drinks by Wehman Bros. (1912, p.42)

0.5 glassmilk — Milkbase
seltzer — Seltzerdilution
  1. Pour milk into the glass until half full, fill the balance with seltzer, and serve.

Cheerio! A Book of Punches and Cocktails by Charles (1928, p.29)

0.5 glassmilk — cold milkbase
0.5 glassiced seltzer dilution
  1. Fill half a glass with cold milk and the rest with iced seltzer.
  2. Drink while effervescent.

Ice: Iced seltzer

See also: Milk Fizz, Egg Lemonade

Source says always put the milk in last to prevent foam overflow.