Census-Online.com - census transcriptions for Clearfield Co.
Clearfield County GenWeb Project collection of online resources for genealogy researchers
Clearfield County Message Board read and post messages with other genealogy researchers of this county
Clearfield County Naturalization Index 1800-1865
Clearfield County Pennsylvania Cemeteries
Clearield County, PA Genealogy Forum read and post messages about your ancestors for this county
Interment.net - cemeteries of  Clearfield Co.
The Tombstone Transcription Project - cemeteries for Clearfield Co; PA
US GenWeb Archives for Clearfield County cemeteries, newspapers, wills, military rosters etc recorded online here

Additional Resources

Pennsylvania Newspaper Search enter your ancestor's name to instantly search the world's largest newspaper archive; over 12 million newspaper pages
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Pennsylvania Death Records