Here are a few links of interest for the Mahanoy City area. Please let me know of any other suggestions. Also, please let me know if any of these links are outdated.
Citizens Fire Company #2 and Mahanoy City EMS
Historical Societies of Schuylkill County, Pennsylvania
Mahanoy City High School Alumni Association
Yahoo Groups for Mahanoy City & Mahanoy Township History & Genealogy