Hilandar Research Library - The world's largest microform collection of medieval Slavic manuscripts. - http://cmrs.osu.edu/rcmss/
Slavica Publishers - Leading U.S. publisher of scholarly books and textbooks. - http://slavica.com/
Journal of Slavic Linguistics - Contains articles on major research in Slavic linguistics, discussions of single issues, and commentary on issues in the field. - http://www.slavica.com/jsl/
The Slavic Review - American Quarterly of Russian, Eurasian and East European Studies. - http://www.econ.uiuc.edu/~slavrev/