Machine-drawn frontispiece.
"A verie easie way to describe a Towne or Castle being within the full sight thereof", 1634, John Bate
"Dürer's Door", 1525, Albrecht Dürer
Portable "Picture Box" (Camera Obscura), 1694, Robert Hooke
Perspectograph, 1752, Johann Heinrich Lambert
Details of "Dürer's Door"