Academic Search Premier (Ebsco) - Offers full text (including images) to peer-reviewed and non-scholarly journals covering broad subject areas, from 1987-present.
Accounting & Tax - Covers accounting and tax topics appearing in key industry publications and newspapers
Administration for Children & Families (US Dept. of Health and Human Services)
America: History and Life - An index to journal articles covering the history of the United States and Canada from prehistory to the present. (Here is a combined search of America: History and Life, and Historical Abstracts)
American Memory (Library of Congress) - A digital record of American history in texts, sound recordings, still and moving images, prints, maps, and sheet music.
Ancestry library - Census records, immigration collection and data of interest for genealogical research.
ArchiveGrid - Indexes historical documents, personal papers, and family histories held in archives around the world; and provides contact information for gaining access to materials in each collection.
Art Index and Full Text - (Indexing 1929+, Abstracting 1994+, ''select'' Full Text 1997+) Abstracts and indexing of an international array of publications with full-text coverage for selected periodicals. In addition to articles, Art Full Text indexes reproductions of works of art that appear in indexed periodicals.
arXiv.org - An archive for electronic preprints of scientific papers in the fields of mathematics, physics, computer science, quantitative biology and statistics
Aspaklaria - A Compendium of Jewish Thought consisting of sources that span the centuries of Jewish text and commentary, including Tanakh, Midrash, Talmud, Rishonim, etc. through the 20th century.
Ask a Government Information Librarian - Get help from librarians who are experts at finding information from government agencies of all levels (local, state, regional, national international)
ATLAS - Religion Index with selected full text.