County b 1 2 3 2 17 81 142 State c 8 50 50 a Includes city-county agencies (See Table III).b Includes multi-county agencies, each such agency counted as one agency (See Table III).c See Table VII.and VII), may differ from similar tables published elsewhere.Thus, according to my definition, in 1920 there were about 175 municipalities which had ordinances, but only about 40 operating smoke abatement agencies; and in 1940 there were about 200 municipalities with ordinances but only about 52 operating smoke abatement agencies.In the hundred year span from 1881 to 1981 there have been leaders in each of the cities, counties, and states without whom little would have been accomplished.My personal hall of fame of deceased Americans who achieved national recognition for their pioneering efforts in smoke abatement and air pollution control is offered as Table II.
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Stern et al. (1982) studied this question.