Image: Ziegler polar russell w porter painting
Size of this preview: 800 × 499 pixels. Other resolutions: 320 × 200 pixels | 1,132 × 706 pixels.
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Title: Ziegler polar russell w porter painting
Credit: Page 10, "Fighting the Polar Ice", Anthony Fiala. This file was derived from: Zieglerporteroct15.png
Author: Russell W Porter
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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