Complex sentence: The APA emblem, dating to 1890, became more officially adopted from 1921-a round medallion with a purported facial likeness of Benjamin Rush and 13 stars over his head to represent the 13 founders of the organization.
Split into simpler sentences: The APA emblem, dating to 1890, became more officially adopted from that year. It was a round medallion with a purported facial likeness of Benjamin Rush and 13 stars over his head to represent the 13 founders of the organization.