File:Air Routes of the United States in 1925.jpg
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Size of this preview: 800 × 509 pixels. Other resolutions: 320 × 203 pixels | 640 × 407 pixels | 1,024 × 651 pixels | 1,280 × 814 pixels | 1,798 × 1,143 pixels.
Original file (1,798 × 1,143 pixels, file size: 497 KB, MIME type: image/jpeg)