DH

Dan Handley

Montador

Undaunted: The Forgotten Giants of the Allegheny Observatory

Undaunted: The Forgotten Giants of the Allegheny Observatory

Guionista

Undaunted: The Forgotten Giants of the Allegheny Observatory

Undaunted: The Forgotten Giants of the Allegheny Observatory

Director

Undaunted: The Forgotten Giants of the Allegheny Observatory

Undaunted: The Forgotten Giants of the Allegheny Observatory