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1950 The number of pools in the U.S. reaches 184,200.
1951 The Council for National Cooperation in Aquatics (CNCA), a forum for national aquatics leaders to interact, is incorporated. Early pioneers include Harold Friermood of the YMCA, Cal Bryant of the Red Cross and Homer "Hoisy" Hoisington of the Boy Scouts of America. In 1994, CNCA would fold.
1951 The Holger-Nielsen back-pressure arm-lift method of resuscitation replaces the Schaefer prone-pressure method.
1952 Drug Research of Adrian, Mich., patents bromine for use as a pool sanitizer. The product is marketed primarily in the Northeast.
1952 Phil Leslie invents the first in-wall pool skimmer.
1954 Concrete-block, vinyl-liner pools emerge. Vinyl liners allow for a different type of construction, Thereby making pools more ...
Source: HighBeam Research, The History of Aquatics : 1950-1956.