Finding and using images online
Using Google Images:
Step 1: Enter search terms
Step 2: In the results, select "Tools" and then "Usage rights."
Select a license to filter search results.
For more info, read Find images on Google that you can reuse
Free, copyright friendly image collections:
Images require attribution unless indicated with
NA= no attribution required
Iso Republic NA
Morgue File Must change the images in some way to reuse them
New York Public Library Digital Collections
You can limit searches to just Public Domain images NA
The attribution is included on the image download
Re: splashed NA