Final answer:
Career information in libraries can be found through periodicals, biographical dictionaries, databases, encyclopedias, and by consulting with a reference librarian. Almanacs and yearbooks are also useful for up-to-date statistics relevant to various careers.
Step-by-step explanation:
Career information can often be found in libraries through a variety of resources. Among these, periodicals, such as newspapers and magazines, can provide the most current information about professions and market trends. Libraries also hold a wealth of other resources that may include detailed career information, such as biographical dictionaries which profile notable individuals across different fields, databases which can index articles from various sources, including specialized journals and general audience publications, and encyclopedias that offer overviews of almost every subject including information about various professions.
When looking for information on careers, one should consult the library's online catalog to find relevant books, ask for assistance from a reference librarian who can guide you through the available resources, and make use of almanacs and yearbooks for statistical data that can be pertinent to your research.