Number 17
1966-1967
Harold Edward Holt
http://upload.wikimedia.org/wikipedi...23333231-v.jpg
http://upload.wikimedia.org/wikipedi...rtrait1953.JPG
http://upload.wikimedia.org/wikipedi..._Holt-1950.jpg
http://upload.wikimedia.org/wikipedi...arold_Holt.jpg
http://upload.wikimedia.org/wikipedi...ol_Holt_PM.jpg
Number 18
1967-1968
Sir John "Black Jack" McEwen
http://upload.wikimedia.org/wikipedi...23474705-v.jpg
http://upload.wikimedia.org/wikipedi...cEwen_1969.jpg
Number 19
1968-1971
Sir John Grey Gorton
http://upload.wikimedia.org/wikipedi...tonWW21941.jpg
http://en.wikipedia.org/wiki/John_GortonQuote:
http://upload.wikimedia.org/wikipedi...Gorton1954.JPG
http://upload.wikimedia.org/wikipedi...arly50%27s.jpg
Number 20
1971-1972
Sir William "Billy" McMahon
http://en.wikipedia.org/wiki/William_McMahonQuote:
He was of Irish ancestry
http://upload.wikimedia.org/wikipedi...23458756-v.jpg
http://upload.wikimedia.org/wikipedi...nAHeadshot.gif