TAS “Keep America Beautiful” Public Service Ad (mid-1970s) This PSA for the United States-based “Keep America Beautiful” anti-pollution organization aired in the mid-1970s. Top 10 Comedy Movies: 1970sDateOctober 7, 2014In relation toEntertainmentTop 10 Movies of the 1970sDateMarch 25, 2014In relation toEntertainmentTop 10 Decade Defining Musical Acts: 1970sDateJuly 27, 2014In relation toEntertainment