You will need to note every image and fact that you use in your newspaper.
All databases cite the sources for you (see how to grab those citations to the right box). However, American Memory and a typical Google Search results do not cite for you. Instead, use Bibme.org or Easybib to cite your sources.
For a Google Image Search, you will need to cite the page you found the information - not Google Images. (Google Images is a search engine and not the location of the image.)