The AAVSO is happy to provide a copy of Bob Nelson's O-C files for Eclipsing Binaries for 2012 [1]. These files can be used for observation planning, and are a valuable resource for EB observers.
Thanks once again for Bob Nelson for providing this service to the EB community.
Links:
[1] http://www.aavso.org/bob-nelsons-o-c-files
[2] http://www.aavso.org/category/tags/eb
[3] http://www.aavso.org/category/tags/eclipsing-binaries
[4] http://www.aavso.org/category/tags/eclipsing-binary-ephemeris
[5] http://www.aavso.org/category/tags/ephemerides
[6] http://www.aavso.org/category/tags/front-page-news
[7] http://www.aavso.org/category/tags/o-c
[8] http://www.aavso.org/category/tags/observing-aids