If you are editing core encyclopaedic articles and adding references from newspapers, blogs and other web sources, please stop, you are not helping as we all deserve better quality sources. Here are some places where reliable sources can be found. Remember to try Google scholar as well as web searches with "site:archive.org". Try WP:RX for requesting inaccessible journal papers. WP:RX has some truly unsung heroes of Wikipedia, librarians who make a big difference to parts of the world where the idea of public libraries never took root.
I am happy to help anyone with research content on some areas such as Indian birds and can access nearly all of the Journal of the Bombay Natural History Society issues. I currently have access to JSTOR, JHU MUSE, and ScienceDirect thanks to the Wikipedia Library. I will be happy to provide content from these sources if I can see that you are working on specific Wikipedia articles.
Free digital resources
- Chennai Museum
- Bodleian / Oxford
- http://www.archive.org - The Internet Archive (quite a lot of historic material)
- http://biodiversitylibrary.org/ Biodiversity heritage library (fauna, flora, J. Asiatic Society, old J. Bombay Nat. Hist. Soc. ...) - all content also via IA
- http://www.medicalheritage.org/ Medicine related scanned works
- http://www.dli.ernet.in/ - useful content, awful site, low quality scans - but use the new interface at - http://www.dli.ernet.in:8080/dlix/ - has some interesting material - best to copy material to the Internet Archive so that specific pages can be linked
http://dli.serc.iisc.ernet.inhttp://www.dli.ernet.in/ - higher resolution material - very interesting!!
- http://nsdl.niscair.res.in/ (Science specific, scholarship of a very low quality, plagiarised, poorly cited etc.)
- http://ignca.nic.in/dgt_0001.htm (IGNCA arts and culture - some low quality images, paid option for research resources)
- Alternate PDF link - http://www.ignca.nic.in/asp/searchResults.asp?page=477&searchOption&searchTerm
- http://dspace.cusat.ac.in/jspui/ CUSAT - some recent material, internal reports etc. mainly engineering, law
- http://dspace.gipe.ac.in/jspui/ GIPE Pune - some very interesting historic material (mainly history, law, culture)
- http://www.isec.ac.in/digitalLibrarybookcollection.html ISEC - some interesting material but mainly duplication of content on the Internet Archive
- http://pahar.in - Himalayas related material, some amazing historic material, maps, books (some duplicated from elsewhere) but lots of original resources
- http://dspace.wbpublibnet.gov.in:8080/jspui/ West Bengal public libraries - some interesting material in Bangla
- http://statelibrary.kerala.gov.in/rarebooks/ Kerala state "rarebooks"
- http://www.panjabdigilib.org Panjab digital library
- http://krishikosh.egranth.ac.in/ = http://14.139.56.90/dspace-1.7.2/ Krishikosh - ICAR digital library - when it works, some excellent material related to biology, agriculture etc. - the bookreader is irritating - if you want the actual PDF - reformat the link to match /bitstream/1/XXXXX/1/XXXXX.pdf
- http://dsr.nii.ac.jp/toyobunko/language/en.html.en Silk route - some Himalayas related material
- http://www.digitalhimalaya.com/collections/index.php Digital Himalayas
- http://dsal.uchicago.edu/ Digital South Asia
- http://oudl.osmania.ac.in/ Osmania University (interesting collection, a lot of it contributed already to the Internet Archive)
- http://www.abhilekh-patal.in National archives of India
- http://nationallibrary.gov.in/ National Library, no material yet (Nov. 2014)
- http://oaob.nitrkl.ac.in/view/subjects/ Content in Oriya
- http://trove.nla.gov.au/newspaper Australian newspaper archive - searchable and free
- http://eprints.uni-mysore.ac.in/ Mysore University
- European digital archives
- http://нэб.рф/ Russian digital library
- http://docnum.u-strasbg.fr/cdm/
- http://digital.ub.uni-duesseldorf.de/
- http://digital.indologica.de/ Digital Indology site (lists content on other archives)
- http://gdz.sub.uni-goettingen.de/en/gdz/ Center for Retrospective Digitization, Göttingen
- http://idb.ub.uni-tuebingen.de/digitue/southasia/ University of Tübingen - digital South Asia
- http://www.savifa.uni-hd.de/digital_coll/literature_southasia.html Heidelberg collection
- http://gallica.bnf.fr/?lang=EN Digital library of France (can have surprises)
- http://www.europeana.eu Europeana (portal that federates other collections including British Library)
- http://www.e-corpus.org/search/index.php
- http://echo.mpiwg-berlin.mpg.de/home
- http://www.muenchener-digitalisierungszentrum.de/index.html?c=suchen&ab=&kl=&l=en http://www.bsb-muenchen.de/index.php (mostly just the catalogue)
- http://bibdigital.rjb.csic.es Spain (has some Goa/Portuguese related material)
- http://digitarq.arquivos.pt Portugal
- North American archives
- Specialist sources
- http://digitallibrary.amnh.org/dspace/ American Museum of Natural History
- http://digital.nls.uk/indiapapers/about.html Medical history
- http://palaeontologicalsociety.in/publication.php Paleontological Society
- SE Asia
Catalogues only
- http://connemara.tnopac.gov.in/ TN Public Libraries
- http://nsl.niscair.res.in/opac.jsp National Science Library
- http://egranth.ac.in/?q=node/186 List of ICAR node OPACs
- http://libraryopac.ignou.ac.in:8080/opac/html/SearchForm IGNOU
- http://libsys.nal.res.in:8080/opac/ NAL
- http://library.tifrbng.res.in:8080/opac/ TIFR
- http://opac.cusat.ac.in/ CUSAT
- http://resourcecentre.daiict.ac.in/catalog/rccatalog.html A catalogue of catalogues