1940 German military map - Batum und Umgebung - Sheet 1
General Staff of the German Army
<a rel="nofollow" class="external free" href="https://www.raremaps.com/gallery/detail/63519/second-world-war-caucasus-batum-und-umgebung-general-staff-of-the-german-army">https://www.raremaps.com/gallery/detail/63519/second-world-war-caucasus-batum-und-umgebung-general-staff-of-the-german-army</a>