Each signature may be linked to the others by up to 53 thematic connections. Some are common to many signatures; others highlight unusual, yet notable, associations and interests. Friendships are not represented because so many signers were friends. Go to "The Bohemians" to view and interact with all 53 connections.
Biography was then, as now, a very popular genre with audiences. A significant number of the door’s signers worked in this genre.
"Contemporary Portraits, Second Series: Frank Harris" by Arthur M. Moss in the Greenwich Village Quill, 1920