This old recipe was written on a large index card and found in a large collection, date unknown. Recipe is typed below along with a scanned copy.
Blue Cheese Dressing
1 c blue cheese crumbled
1/4 c salad oil
2 tbsp vinegar
3/4 c sour cream
1/2 c mayonnaise
pinch sugar
dash Wor. Sauce
1 tsp chive
Set aside 1/4 c. blue cheese
Blend rest of ingredients in electric mixer. Stir in reserved cheese. Chill.