Title: <i>The southern part of Russia, a.k.a. Muscovy</i><br>from<br>"Theatrum Orbis Terrarum, sive Atlas Novus in quo Tabulæ et Descriptiones Omnium Regionum, Editæ a Guiljel et Ioanne Blaeu"<br>(<i>Theater of the World, or a New Atlas of Maps and Representations of All Regions, Edited by Willem and Joan <a href="//commons.wikimedia.org/wiki/Blaeu" title="Blaeu">Blaeu</a></i>), 1645.<br>
Among numerous topographical mistakes there is <a href="https://en.wikipedia.org/wiki/Volga%E2%80%93Don_Canal" class="extiw" title="w:Volga–Don Canal">a canal</a> (<i>Fossa Kamouz</i>, non-existent at the time) between Don (<i>Tanais flux</i>) and Volga (<i>Wolga olim Rha flux</i>) near right side of the map at latitude what the author thought to be 51° N.
Isaaco Massa
1645
<a rel="nofollow" class="external text" href="http://www.library.ucla.edu/yrl/reference/maps/blaeu/index.htm">University of California</a>