The frontispiece of The art & practice of typography: a manual of American printing, including a brief history up to the twentieth century, with reproductions of the work of early masters of the craft, and a practical discussion and an extensive demonstration of the modern use of type-faces and methods of arrangement by Edmund Gress.
The title of this image is given as:The Scribe at Work. Representing a secretary to Philip the Good, Duke of Burgundy and patron of learning. He is copying a manuscript at the Hague about the time typography was invented.
In fact this is a coloured close copy of a famous image of Jean Miélot, translator, compiler and copyist in the service of Philip the Good (more on this scribe, this iconic image and his master HERE).