when did the surgeon general issue the first report indictating that secondhand smoke is dangerous to nonsmokers

http://www.surgeongeneral.gov/library/history/biokoop.htm

See if this helps any. I see the date of 1964 as the beginning of the Public Health Service warning Americans about the dangers of second hand smoke. Apparently Koop, during his service as Surgeon General, took this to a higher level in 1986.

To find out when the Surgeon General issued the first report indicating that secondhand smoke is dangerous to nonsmokers, you can follow these steps:

1. Visit the official website of the U.S. Surgeon General, which is www.surgeongeneral.gov.
2. Navigate to the "Library" section of the website.
3. Look for any reports or publications related to the dangers of secondhand smoke or the impact of smoking on nonsmokers.
4. Click on relevant links or search for specific topics related to secondhand smoke.
5. Look for historical reports or publications that are dated prior to the report by Surgeon General C. Everett Koop in 1986.

Alternatively, you can use search engines like Google to search for historical reports or publications on the dangers of secondhand smoke issued by the Surgeon General. Simply search for "Surgeon General report on secondhand smoke" or similar keywords to find the specific information you are looking for.