Main (Thompson) Library location: North wing -- First window. Johann Fust (c.1400 – 1466) was a wealthy financier who, in 1450, began to lend Johannes Gutenberg large sums of money to support his ambitions of printing with movable type. In 1455, around the time when Gutenberg was publishing his 42-line Bible, Fust sued him for the money and interest owed to him, and as a result of their court proceedings, Gutenberg lost his equipment, materials, and publications. Subsequently, Fust opened his own printing house along with Peter Schoeffer (c.1425 – c.1502), a copyist and apprentice of Gutenberg in Mainz. The first book they printed together was the Psalterium Moguntinum, or Mainz Psalter, in 1457 – which was the first book to include a colophon and printer's mark. Fust and Schoeffer are also known for having printed Pope Clement V's Constitutiones (1460), a 48-line bible (1462) and Cicero's De Officiis (1465). In the years after Fust's death, Schoeffer continued to print books and operated occasionally as a publisher. The printer's mark of Fust and Schoeffer in the Vassar Library consists of two shields, suspended from the branch of a tree. The branch from which the coupled shields hang creates a rebus, an allusion to words through the visual representation of sounds and syllables, as it suggests its Latin translation, "fustis." The shield on the left is a saltire, or heraldic diagonal cross, and the one on the right is a chevron, adorned with three stars. Some scholars believe the mark to be a combination of the individual shields of each printer. This device first appeared in the Mainz Psalter of 1457, and was usually printed in red ink. Schoeffer continued to use the device after the death of Fust in 1466.