Or find sites with free use images.. WC has a Image Library-
Other free or low-cost copyright-free images
Flickr Creative Commons
The Commons by Flickr
Internet Archive Book Images
The British Library's Flickr Stream
If you require high-resolution or independent artist contributions, there are several design studios and independent photographers offering limited licensing or works in the public domain.
StockSnap.io has a large selection of stock photos. The site adds several hundred images each week, with thousands in its permanent database.
Unsplash contains high-resolution photos, and is considered one of the higher-quality free sites on the web. You must check each photo for copyright status before downloading and using, however most of them are released under the creative commons public domain license.