To develop a list of companies in an industry specific to a profession or local to a particular geographic area, you may use the library's Mergent Intellect product.
In Mergent Intellect, scroll down a ways to click on “Job Search.” Here, you will view a search screen where you may try an “Occupation Search.” Try typing in a keyword describing the profession, and see what industry code suggestions occur.
Choose one, and you will see a list of industries ranked by number of employees. Click on the “Code” for your industry/setting, limit geographically to Metro Area, City, or Zip Code, and then click “Search Job Opportunities.”
A list of employers will display, with sales figures and phone numbers. You may hover over an employer’s name to see its address. To save a report of your findings, click the icon for "Export records from search results" and choose "XLS", then "Export Files".
The following links are for some of the major employment help websites.