http://www3.old-yearbooks.com/pennsylvania/3748/apollo-pa-high-school-sophomores-freshmen-eighth-graders-1921
Apollo, PA High School Faculty, Seniors & Juniors 1921
http://www3.old-yearbooks.com/pennsylvania/3747/apollo-pa-high-school-faculty-seniors-juniors-1921
More Pennsylvania Yearbooks, Class Rosters, etc.
