Someone found a journal by George Washington, in his own hand, that included his recipe for beer, and his now infamous eggnog recipe.
1 Pint Brandy
1/2 Pint Rye Whiskey
1/4 Pint Rum
1/4 Pint sherry
1-1/2 Cups Sugar
1 Quart Cream
1 Quart Milk
12 Eggs
It really sets you to think about modern changes to it that can be made. For example using differently aged brandies, using Bourbon instead of Rye, 151 or Dark Rum, different sugars, and unpasteurized cream and milk.
I have my great aunt’s notes from her cooking class in college back in the 1890’s. I have many old hand written recipes from the early 1900s too. All the women in my family were excellent cooks. I cook the exact same Thanksgiving and Christmas meal that I had growing up, which my great grandmother, born in the 1880s served. Boiled custard is a must at Christmas and jam cake. All very old, but still delicious.