Giannini & Hilgart

Giannini and Hilgart is a studio established in 1899 which manufactured stained glass windows. It was formed by Orlando Giannini, a Swiss-Italian from Ohio, and Frederick Hilgart, born in Germany.

The studio created and designed colorful glass windows for businesses, homes, churches,  fireplaces, and mantels. Frank Lloyd Wright worked with Giannini and Hilgart to produce his prairie-style windows. George Maher was another client of Giannini and Hilgart. The studio also manufactured pottery. The original firm was in the Chicago Loop area.