The document is a compilation of occupational information obtained by business teachers in a university extension course during field visits to businesses, industries, and service agencies in the Chicago suburban area. Each individual or group of student reporters present information on organizations that are representative of each of the 15 occupational clusters, with the resulting volume containing scores of references organized by student-author. There is a variety of emphasis and depth of detail. In all cases, the names and addresses of the organizations visited are given; in some cases, however, the emphasis is on occupational information such as organizational size and structure, employment opportunities, job descriptions, qualifications, and salaries, while in other cases, the organizations are treated as educational resources and the information presented in the report pertains to procedures for arranging tours and obtaining information about the organization. A contact person is listed for each organization cited. There is no index. (AJ)