Muteferriqa is a primary source research portal containing 7 million pages of Ottoman Turkish printed books and periodicals, on which you can search and read in Ottoman, Turkish, and English; and make visual discoveries as well through image search.  It contains an exceptionally rich collection of printed materials published in the Ottoman Empire from the 18th to the mid-20th century.  The free trial ends on 30 June. Please, do not forget to use the CEU VPN if you are off-campus.