Serial Killers and True Crime: Primary Sources

Within a search engine such as Google, put a person's name in quotes and then follow it with a type of primary source.
For example: “ted bundy” archives

Some primary source keywords:

• Archives
• Transcripts
• Photos
• Audio recordings
• Video recordings
• Journals
• Letters
• Diaries

Also consider adding site:.gov as part of your search string to search only government web sites.
For example: "Ted Bundy" letters site:.gov