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Biography
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The Mark IV
Effective period / Period of releases: 1958 - 1959
The Mark IV were an American musical ensemble, based in Chicago, consisting of Bob Peterson, Leon McGeary, Williams Thomas, and Michael McCarthy. They were originally named The Rhythm Makers. They later changed their name to Mark V, and then - as members left - to The Mark IV, and eventually ending in the 1980s as The Mark IV.:format(jpeg):mode_rgb():quality(90)/discogs-images/A-1117347-1383410825-4281.jpeg.jpg){kind=link}