Flipping through recipes, I came across the 'first' recipe and thought I'd share with those of you that remember when it first came out;-D
Original Chex Party Mix
1/2 cup butter or margarine
2 tbs Worcestershire sauce
1-1/4 tsp seasoned salt
1/4 tsp garlic salt
3 cups Wheat Chex square cereal
2 cups Rice Chex square cereal
1-1/2 cups peanuts

1-1/2 cups small pretzel rods
Preheat oven to 275 degrees F. Melt butter in a shallow pan. Stir in Worcestershire sauce, seasoned salt, and garlic salt (not garlic powder). Add Wheat Chex, Rice Chex, nuts (peanuts, pecans or cashews), and pretzel rods. Mix until all pieces are coated with the butter mixture.
Place on a shallow baking pan with sides. Bake for 40 minutes, stirring every 10 minutes. Cool. Bag it or jar it as a gift! Makes 8 cups.