Here are two more sources of images to aid communication in the target language
The Visual Dictionary – http://www.infovisual.info/index.html
The Visual Dictionary is different from an encyclopedia or from traditional online dictionaries, thesauri and glossaries because the images replace the words. Search for words or explore the thematic pages.
Simple Photographic Dictionary – http://photographicdictionary.com
The photographic dictionary illustrates thousands of common nouns and simple concepts with beautiful photographs. This dictionary differs from other dictionaries in several ways:
Language that is simpler and easier to understand than sites like Wikipedia
Short, to the point definitions of words
Every entry illustrated by a photograph
All names are given for concepts or nouns that are known by a different name in different parts of the world.