Early American Craftsmen Guild Certificate
Guild Membership Certificate issued to William Boyce by the Master Plasterers Company of Philadelphia, December 7, 1812.
The Master Plasterers Company charter was signed, and the company created in 1804. The charter was signed by 17 plasterers representing the elite of the city's plastering trade. Among them were William Thackera, Jr., Peter Wolford, and William Jones, each being a plasterer of a major Philadelphia buildings.
William Joyce seems to have joined the guild 8 years after its initial creation.
The top illustration features what seems to be a woman, perhaps a personification of Liberty, staring serenely at a globe showing the zodiac. The figure grasps an anchor while the globe rests on a pedestal that says "Let Brotherly Love Continue," a phrase used by the Worshipful Company of Plaisterers, an English guild for plastery. In the background, an ornate governmental building is pictured.
The lower image seems to be of a plasterer's tools and trade. Centered is the coat of arms of the Worshipful Company of Plaisterers which features a depiction of the main tools used in the craft. Above the coat of arms is an ornate bench with various plastery tools strewn about the table. On both sides are what seems to be unfinished projects or piecework as well as other tools.
The document is signed by Edward Evans, Secretary, and William Thackara, President, of the Mastery Plasters Company of Philidelphia. Thackara was a leading plasterer in Philadelphia and helped organize the first plasterer's guild in the city in 1804. As a plasterer, Thackara worked on Philadelphia's Congress Hall, the Bank of Philadelphia, the United States Capitol, and Independence Hall throughout his career.
Thackara and Evans led the guild throughout the early 1800s.
https://plaistererslivery.co.uk/company/history