They may maintain a listing of employers and professional contacts. Professional societies, professional meetings and symposiums provide an opportunity to link up with employers and professionals. Attend local meetings, join a student chapter and get involved in the profession. Many provide membership directories or access to member information. Much of this information can be obtained on the internet or by calling the organization.
Alumni can be an excellent resource for employment.
Carnegie Mellon has several alumni clubs around the country. Additional alumni contacts can be obtained from the Career Center, academic departments, friends, and the Alumni Relations Office. Also know that many of these print materials are available on the internet. You can identify employers and organizations where you can inquire about available positions or future possibilities. This is particularly useful if you are looking in a new geographical area.