Sources and limitations reported in order of frequency of use
| Tobacco document sources reported | Limitations reported |
|---|---|
| BAT, British American Tobacco; B&W, Brown and Williamson; MSA, Master Settlement Agreement; UCSF, University of California, San Francisco. | |
| MSA tobacco industry web sites | Returned document set not complete |
| Tobacco Documents Online | Searching inefficient, returned document set voluminous |
| Legacy/UCSF | Searching problems |
| Other non-tobacco industry websites | Depositories hard to access |
| Tobacco documents non-MSA or BAT/B&W | Nature of document evidence creates limitations |
| Minnesota Depository | Documents returned by search redundant |
| BAT Guildford Depository | Not clear from documents whether plans were implemented |
| Early BAT and B&W doc set | Documents stop in 1990s |
| Non-tobacco document sources | Selection bias in total document population |
| General or specialist press, internet | No triangulation of documents with other sources |
| Legislation, lawsuits, hearings | |
| Published literature | |
| Interviews and surveys | |
| Government or state information | |
| Resources from individuals or organisations | |
| Quantitative data | |
| Observation | |
| Agencies working for the tobacco industry | |
| Patents | |
| Filings from stock exchanges, financial records | |
| Advertising campaigns | |