This collection includes letters, official and legal documents, photographs and family papers, articles about Cornelius Mayer, and other materials belonging to Mayer ranging from 1628 to 1944 regarding Cornelius Mayer's family, his life and work, including drawing, and family business. There is also heraldic information, complete issues of the publication, Gewerbehalle, a German decorative arts periodical, a German rifle care manual, and a confectioners'...