The Book of Kells
This example from the manuscript (folio 292r) shows the lavishly decorated section that opens the Gospel of John.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"KellsFol292rIncipJohn."
http://en.wikipedia.org/wiki/File:KellsFol292rIncipJohn.jpg
Wikipedia
CC BY.
