Sour Cream Pancakes
1/2 teaspoon baking soda
1 cup sour cream
2 eggs, separated
2 tablespoon sugar
1 teaspoon salt
1/2 cup flour
Stir baking soda into sour cream, set aside. Beat egg whites until soft peaks form, set aside. Combine egg yolks, sugar and salt and beat well. Add sour cream and flour and beat thoroughly. Fold in egg whites.
Spoon batter into hot, oiled skillet by tablespoonsful. Brown pancakes on each side.

Maybe not the stuff of your childhood memories....but very good
From „Our Favorite Grange Recipes¾ 1969-for your consideration

Prize Pancakes
1 cup buttermilk
1 teaspoon soda
3/8 teaspoon salt
1/4 cup sour cream
1 egg
1/4 cup uncooked oatmeal
1/2 cup plus 1 Tablespoon flour
1/3 cup sugar
3/8 teaspoon baking powder
1/8 cup cornmeal
Pour buttermilk in bowl. Add soda and salt. Stir in sour cream until it foams. Add eggs and beat with a spoon. Add oatmeal. Sift flour, sugar, baking powder and cornmeal into mixture and beat until flour lumps are out. (sic) When deep brown turn. Serve with jelly, jam preserves, honey or syrup.
(I guess you would know to cook them even though the recipe doesn¼t instruct you to)

one more (overachieving today) from Grange Recipes

Creole Pancakes

4 eggs
1 cup cottage cheese
1 cup sour cream
3/4 cup flour
1 tablespoon sugar
3/4 teaspoon soda
1/2 teaspoon salt

Sift flour, sugar, soda and salt together. Beat egg, add cheese and cream. Add dry ingredients. Blend well with rotary egg beater. Bake on hot griddle and serve with butter and blueberry jam.

(My childhood friends mother made something just like these and served them with apple butter)