Image: 1933 Frank W. Caldwell (cropped)
Size of this preview: 423 × 599 pixels. Other resolutions: 169 × 240 pixels | 567 × 803 pixels.
Original image (567 × 803 pixels, file size: 52 KB, MIME type: image/jpeg)
Description: Frank W. Caldwell is congratulated by President Franklin D. Roosevelt on the award of the Collier Trophy (visible in the background) in 1933 for his work with Hamilton Standard on the controllable-pitch propeller. NASM-NAM-A-48118
Title: 1933 Frank W. Caldwell (cropped)
Credit: https://airandspace.si.edu/collection-objects/caldwell-frank-w-roosevelt-franklin-delano-president-awards-and-trophies-collier
Author: Unknown authorUnknown author
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
Image usage
The following page links to this image:
All content from Kiddle encyclopedia articles (including the article images and facts) can be freely used under Attribution-ShareAlike license, unless stated otherwise.
.jpg){kind=link}