From the unaltered 1607 plate

Michael Sparke, 1635 :
The Dukedome of the Abissines. 5.5 x 7.25 inches. Excellent. $165.

Michael Spark used copperplate prepared for the Mercator Atlas Minor of 1607 for the maps in his 1635 atlas printed in London. The present map allows a head-on view of Mercator's theories about the source of the Nile.