Table EMP 63. Number of employees in racing and track operation (SIC# 7948) 

 for 1959 , 1965, 1970, 1975 and 1978 (U.S. Department of Commerce 1961, 

 1966a, 1971a, 1977b, 1980a) . 



J No data prior to 1959. 



Data withheld to avoid disclosure of individual establishments. 



98 



