Bible Encyclopedias
Giotto's O
The Nuttall Encyclopedia
A perfectly round O, such as Giotto is said to have sent the Pope in evidence of his ability to do some decorative work for his Holiness.
Copyright Statement
Public Domain.
Bibliography Information
Wood, James, ed. Entry for 'Giotto's O'. The Nuttall Encyclopedia. https://www.studylight.org/encyclopedias/eng/nut/g/giottos-o.html. Frederick Warne & Co Ltd. London. 1900.