CLIO is Columbia’s library catalog. A journal title search will tell you which journals we receive, print or electronic versions.
JSTOR is a multi-disciplinary full text journal repository, with an emphasis on historical back issues of journals. The archive can be searched or browsed.
ProQuest Digital Dissertations has the downloadable full text of dissertations completed in the US back to 1997, and an index of completed dissertations back to the 19th century.
ProQuest Historical Newspapers has the searchable full text of a number of US newspapers, back to the 19th century. Results are shown in PDF format.