North Pole Isotherms Magnetic Zones 1865 Baehr lot x 2 scientific maps September2019 including a large folding color

including a large folding color litho map of New Guinea with a lengthy article discussing the present state of knowledge about it by Walter Blackie

but internally text blocks remain clean

Fine engraved lot of prints

Photographic books of 19th century]

North Pole Isotherms Magnetic Zones 1865 Baehr lot x 2 scientific maps September2019 including a large folding colorLot x 2 Scientific Maps (Old Maps, 19th Century Maps, Scientific Maps, North Pole, Isotherms, Magnetic Zones, Arctic Circle). Issued 1865, Germany by Braun. Map by Baehr. Very uncommon lot x 2 mid 19th century German color lithographed maps focusing on the arctic circle north pole. Well preserved, minor light scattered speckle age spots, mostly clean and a nice looking example with pleasing age patina. Sheets Measure c. 9" H x 7" W. Printed Area