Royalty-Free Textbook Photos, orientation: horizontal
- 3260x2336 Public Domain
- 5472x3648 Public Domain
- 3718x1956 Public Domain
- 4000x2533 Public Domain
- 4548x3411 Public Domain
- 5472x3648 Public Domain
- 4608x3456 Public Domain
- 5271x3514 Public Domain
- 4928x3264 Public Domain
- 5472x3648 Public Domain
- 4272x2848 Public Domain
- 4000x3000 Public Domain
- 4431x3323 Public Domain
- 4237x3178 Public Domain
- 4608x3072 Public Domain
- 4000x3000 Public Domain
- 5000x3278 Public Domain
- 3969x2977 Public Domain
- 4415x3311 Public Domain
- 4000x3000 Public Domain
- 4533x3400 Public Domain
- 4431x3323 Public Domain
- 3872x2592 Public Domain
- 4117x3088 Public Domain
- 4608x3456 Public Domain
- 4487x2623 Public Domain