Buffalo Bayou Partnership 76-0183954 Click to copy TX Environment 30 Regents of the University of California at Riverside 95-6006142 Click to copy CA Education 30 Houston Parks Board 74-1860046 Click to copy TX Philanthropy 29 Asia Society Texas Center 03-0433949 Click to copy TX Arts and Culture 27 Childrens Museum Inc 74-2178563 Click to copy TX Arts and Culture 27 Alley Theatre 74-1143076 Click to copy TX Arts and Culture 26 Hope and Healing Center & Institute 45-3305276 Click to copy TX Religion 26 University of Kansas Center for Research Inc 48-0680117 Click to copy KS Science 25 Barbara Bush Houston Literacy Foundation 46-5037878 Click to copy TX Philanthropy 24 Children at Risk Inc 76-0360533 Click to copy TX Crime and Legal 24 Houston Hospice 74-2092951 Click to copy TX Human Services 24 KIPP Texas Inc 01-0639602 Click to copy TX Education 24 Bakerripley 23-7062976 Click to copy TX Human Services 23 Communities in Schools of Houston Inc 76-0031827 Click to copy TX Education 23 Menil Foundation Inc 74-6045327 Click to copy TX Arts and Culture 23 The Rose 76-0193812 Click to copy TX Disease and Disorders 23 Emerge Fellowship 45-4077397 Click to copy TX Education 22 Trees for Houston 76-0046318 Click to copy TX Environment 22 Board of Regents of the University of Nebraska 47-0049123 Click to copy NE Education 21 Camp Allen-Camp and Conference Center 74-6016479 Click to copy TX Religion 21 Houston Christian University 74-1400699 Click to copy TX Education 21 Southwestern University 74-1233796 Click to copy TX Education 21 Center for Pursuit 74-1272417 Click to copy TX Human Services 20 Episcopal High School 76-0056509 Click to copy TX Education 20 University of Houston Foundation 74-6041411 Click to copy TX Education 20 University of Louisville Research Foundation Inc 61-1029626 Click to copy KY Education 20 Christian Community Service Center Inc 74-2128141 Click to copy TX Human Services 19 Houston Area Urban League Inc 74-1611455 Click to copy TX Human Services 19 West Virginia University Research Corporation 55-0665758 Click to copy WV Education 19 Yes Prep Public Schools Inc 76-0563835 Click to copy TX Education 19 Board of Regents Nevada System of Higher Education 88-6000024 Click to copy NV Education 18 Independent Sector 52-1081024 Click to copy DC Philanthropy 18 National Opinion Research Center 36-2167808 Click to copy IL Social Science 18 Research Triangle Institute 56-0686338 Click to copy NC Science 18 Search Homeless Services 76-0260403 Click to copy TX Human Services 18 Unidosus 86-0212873 Click to copy DC Unclassified 18 Breakthrough Houston 83-0924608 Click to copy TX Education 17 Easter Seals of Greater Houston Inc 74-1238418 Click to copy TX Disease and Disorders 17 Houston Arboretum & Nature Center 74-1587880 Click to copy TX Environment 17 Houston Grand Opera Association Inc 74-6016764 Click to copy TX Arts and Culture 17 Houston Habitat for Humanity Inc 76-0207084 Click to copy TX Housing 17 Houstons Amazing Place Inc 76-0604478 Click to copy TX Human Services 17 New Hope Housing Inc 73-1419279 Click to copy TX Housing 17 Social Science Research Council 13-1325070 Click to copy NY Social Science 17 University of Texas Law School Foundation 74-6056794 Click to copy TX Education 17 Coalition for the Homeless of Houston/Harris County 76-0257018 Click to copy TX Housing 16 Contemporary Arts Museum Houston 74-1093771 Click to copy TX Arts and Culture 16 Evelyn Rubenstein Jewish Community Center of Houston Texas 74-1198298 Click to copy TX Religion 16 Federation of American Scientists 23-7185827 Click to copy DC International 16 Memorial Assistance Ministries Inc 76-0044172 Click to copy TX Human Services 16