Book Collection
Hammett's Planisphere and Envelope circa 1920
Here is a copy of Hammett's Planisphere with the blue star background that has the remnants of the original envelope. Somehow the envelope managed to protect the planisphere from damage over the decades because the planisphere is in nearly perfect shape. Obviously the planisphere and its envelope were kept somewhere safe. This planisphere dates from about 1920.
Envelope Printed Side
Envelope Flap Side
Planisphere Front Side
Planisphere Back Side