This promo recipe from Guy’s pecans was clipped from a newspaper and found in a large collection, date unknown. I’ve typed it below along with a scanned copy.

SOUTHERN PECAN PIE
Makes one 9-inch pie

1 (9-inch) unbaked pastry shell
3 eggs, beaten
1 cup Guy’s Pecan Pieces or Halves
1 cup light corn syrup
1/2 cup firmly packed light brown sugar
1/4 cup margarine or butter, melted
1 teaspoon vanilla extract
1 teaspoon vinegar
Whipped cream, optional

Preheat oven to 450°. In medium bowl, combine all ingredients except whipped cream; mix well. Pour into crust. Bake 10 minutes; reduce oven temperature to 325° and continue baking 35 to 40 minutes. Cool. Garnish with whipped cream if desired.