My mapping of the World of Greyhawk started with small maps made to fit on a piece of paper. The Flanaess was divided up into 91 parts, looking like this.
The 2019 version of the Atlas has a page size of 11x17 inches and uses the updated map style.
The larger format makes it possible to cover the Flanaess using 71 pages.
The Atlas comes in JPG and PDF format ready to print in 11x17 inch format, and front and rear cover is also included.
You can download it here: http://bit.ly/GH-FlanaessAtlas-598CY-2019