Ancestry.com
Ancestry.com, Clearfield Progress (Clearfield, Pennsylvania) (Online publication - Provo, UT, USA: Ancestry.com Operations Inc, 2004.Original data - Clearfield Progress. Clearfield, PA, USA. Database created from microfilm copies of the newspaper.Original data: Clearfield Progress. Clearfield, PA, USA. Database creat) - Clearfield Progress (Clearfield, Pennsylvania)