Official Reports of the US Surgeon General, commencing with the 1964 report (note: not all reports linked to the following website relate to tobacco)http://www.surgeongeneral.gov/library/reports/index.html
California Environmental Protection Agency's (Cal/EPA): Health effects of exposure to environmental tobacco smoke: Final Report, approved at the Panel's June 24, 2005 meeting http://www.oehha.ca.gov/air/environmental_tobacco/2005etsfinal.html
National Cancer Institute's Tobacco Control Monograph SeriesSome monographs in this series review health effects of tobacco use http://cancercontrol.cancer.gov/tcrb/monographs/