Images can enhance almost any presentation. Some of the online encyclopedias and articles will have images, but it is not always possible to copy or save them because they are protected. Here are some other ways to find images.
Photos and images from The Associated Press and its partner companies.
Excellent resource for illustrations, copyright free for educational use. Can search by concept (hostages) as well as specific people or events (Einstein).; Photographs, prints, graphics, audio and text; Coverage back to the 1800s, primary coverage late 20th century-present