Health Care Career Expo. 3 p.m 7 p.m., Oct. 21, Calvert Library, 850 Costley Way, Prince Frederick. CSM is co-sponsoring a Health Care Career Expo hosted at Calvert Library, designed to educate those interested in pursuing a career in health care. Calvert Countys leading employers will discuss career paths in health care, including the jobs that are in great demand, average pay rates and educational requirements. Free. Contact Robyn Truslow at 410-535-0291 or http://calvert.lib.md.us or Nellie Pharr-Maletta at 301-934-7524 or email@example.com.