Among the Masonic symbols on this apron, the two upward-facing hands are most distinctive. They may be a symbol of the five points of fellowship that help teach Masons the virtue of brotherly love. The Philadelphia painter who marked this work, John Meer, is thought to be the father of another John Meer. Born in England, the older Meer immigrated to Pennsylvania where he earned his living as an artist and engraver. He joined Montgomery Lodge No. 19 in 1807.