In roughly chronological order...

1971 You Deserve a Break
1971 McDonaldland
1971 Evil Grimace and the Movie Producer
1971 Gobblins in the Garden
1971 McElection Day
1972 Feed the Wastebaskets
1972 Evil Grimace and the Beauty Contest
1973 Heading For McDonaldland
1973 Keep America Clean
1973 Ronald and the Nutrients
1973 Say Cheeseburger
1974 Breakfast (at Participating Restaurants)
1974 Invisible Car