This recipe was clipped from a newspaper and found in a large collection, marked date is 1985. An intro to the recipe mentions that years ago this was printed on the side of Nabisco graham cracker boxes.
GRAHAM CRACKER PIE
Crust
16 crushed graham crackers
1 tbsp. flour
1/2 cup white sugar
1 tsp. cinnamon
1/2 cup melted shortening
Mix all ingredients together and pack in an 8 or 9-inch pie pan. Reserve about one-fourth cup crumbs to sprinkle on top of meringue.
Filling
1/2 cup sugar
3 egg yolks
2 tbsp. cornstarch
2 cups milk
1 tsp. vanilla
Combine all ingredients except vanilla in saucepan and cook and stir until thick. Remove from heat and add vanilla. Pour into pie shell and chill. Top with meringue, brown and sprinkle with reserved crumbs.