A Princess of Mars
Schoonover helped to organize what is now the Delaware Art Museum and was chairman of the fundraising committee charged with acquiring works by Howard Pyle. In his later years he restored paintings including some by Pyle and turned to easel paintings of the Brandywine and Delaware landscapes. He also gave art lessons, established a small art school in his studio, designed stained glass windows, and dabbled in science fiction art (illustrating Edgar Rice Burroughs’ "A Princess of Mars"), he was known locally as the “Dean of Delaware Artists.”