Tried it. Like you said - loads, but I have no idea whether they're royalty-free or not. I want the picture to go into a book I'm working on. I don't expect to sell more than a dozen copies or so, so I don't really want the rigmarole of going out searching for copyright permissions. If push comes to shove, I'll just have to leave it out.
"If you are Looking for Top high quality and with no limitation for commercial use paid image, then I-stock photo and Shutterstock are the best. But if you want Free Stock images for your projects and basic use, you can use options like
1-Freerangestock https://freerangestock.com/
2-Pixabay
3-Pexels
4-Unsplash
5-Vintage stock photos
6-Freepik
And if you want to save time you can use https://imagefinder.co/ that search the top Stock image website and gives Images result. "