Articles and Chapters
Indexing, abstracting and other bibliographical listing of periodical articles and chapters
Journal Archives is a JISC service containing the backfiles from 8 major publishers.
JURN -is an academic search-engine, indexing 3,952 free e-journals in the arts & humanities.
For details of articles appearing in the popular press such as county magazines, etc. some are indexed in British Humanities Index. For newspaper articles see below.
Of course there are many more based indexes based on subject, language of publication, period of publication, historical period, etc. Those interested in older material are advised to consult indexes and bibliographies of Victorian literature, etc.
Also see the Bibliography sections for additional listings and current awareness publications
There are many indexes and search engines to newspapers by country, language, repository and so on. There are also indexes to the contents of individual newspapers such as The (London) Times. A list of llama news articles in a selection of national newspapers has been started here.