Internet Public Library Comprehensive site for all kinds of reference materials, electronic texts, serials, various exhibits, and special topics. Special sections for youth and teen materials, and for librarians. Excellent links for Native American authors, organized by name, tribe, or titles. A pilot project of the National Archives and Records Administration, reflecting only a portion of NARA so far. Includes descriptions of documents, photographs, maps and sound recordings.
Some records contain actual photographs, drawings, audio files, etc.
Here's an example of an interactive subject guide in use at the Univ. Users provide subject terms, and the system provides links to collections which may have resources on the topic. Aims to assist health care professionals as well as consumers. Languages of the World Includes over 6,700 languages spoken in 228 countries. Indexes for Name or Language Family.