Date Biscuits

Rub butter into the flour, into which other ingredients

From 1922:

One pound of flour, 1 teaspoonful of cream of tartar, half teaspoonful carbonate soda, ½ lb. butter, ½ lb. sugar, 2 eggs, a little milk.
Rub butter into the flour, into which other ingredients have been mixed; drop eggs in whole and put in ½ lb. dates, then mix thoroughly. Roll out ¼ in. thick, cut biscuit size. Bake in moderate oven till brown.