CMMC provides full-text, indexing and abstracts for hundreds communication journals covering related disciplines such as media studies, linguistics, rhetoric and discourse. Many of the journals have searchable cited references.
This is a good starting place for term papers - to get a basic overview of almost any topic. It also includes short videos and high-resolution art images across all subject areas. Results link out to content in other databases provided by the ISU Library.
This is a subset of the full JSTOR collection, limited to content found in the JSTOR Open Collection. It is primarily a collection of book chapters, but it also contains several thousand freely-accessible journal articles.