EXXON MOBIL CORPORATION 2009 FORM 10-K



EXXON MOBIL CORPORATION 2010 FORM 10-K



EXXON MOBIL CORPORATION 2011 FORM 10-K



AT&T CORPORATION 2010 FORM 10-K



CHEVRON CORPORATION 2010 FORM 10-K



CHEVRON CORPORATION 2011 FORM 10-K



CHEVRON CORPORATION 2012 FORM 10-K



CHEVRON CORPORATION 2013 FORM 10-K