Royalty-Free America Photos, dominant color: gray
- 5472x3648 Public Domain
- 2000x1442 Public Domain
- 5184x3456 Public Domain
- 2048x1362 Public Domain
- 6144x4612 Public Domain
- 4288x2848 Public Domain
- 2879x1920 Public Domain
- 2688x1511 Public Domain
- 2835x1890 Public Domain
- 2839x1781 Public Domain
- 2636x3460 Public Domain
- 3568x2368 Public Domain
- 3888x2592 Public Domain
- 2000x1500 Public Domain
- 3565x2320 Public Domain
- 2523x3894 Public Domain
- 2880x2192 Public Domain
- 5466x3649 Public Domain
- 6144x4096 Public Domain
- 2850x3742 Public Domain
- 3645x3645 Public Domain
- 2000x1303 Public Domain
- 6144x4612 Public Domain
- 6144x4096 Public Domain
- 2200x1466 Public Domain
- 6000x4000 Public Domain
- 5184x3456 Public Domain
- 7360x4912 Public Domain
- 4612x6144 Public Domain
- 2783x1600 Public Domain