Seems to be largely composed of summer camps for children. There are other books on the topic in this location. Professional and Occupational Licensing Directory. Ref HD 3630 U7 P78. Table of contents lists over 100 job categories.
Book is arranged by category then by states.
Lists various licenses available for each occupation. At the front is a 10 page index of job titles which refers to the proper pages. Standard Occupational Classification System. Click SOC . Manual on how to classify job positions.