Found in articles
File:1984 Summer Olympic games countries.png
Countries which participated in the 1984 Summer Olympics, as listed at the olympic games museum archive copy at the Wayback Machine, derived from blank
File:1972 Summer Olympic games countries.png
Countries which participated in the 1972 Summer Olympics, as listed at the olympic games museum archive copy at the Wayback Machine, derived from blank
File:2008 Summer Olympic games countries.svg
Countries which participated in the 2008 Summer Olympics, vectorized version of 2008 Olympic games countries.PNG derived from blank world map. Blue = Participating
File:1976 Summer Olympic games countries.png
Countries which participated in the 1976 Summer Olympics, as listed at the olympic games museum archive copy at the Wayback Machine, derived from blank
File:Olympic boycotts 1976 1980 1984.PNG
source of the information on the 1976 and 1984 boycotted countries the Wikipedia pages on the respective Olympic Games. The source for the 1980 info was Time
