- Ancestry Family Trees (ESPECIALLY those that aren't sourced)
- Family Group Sheets from whomever (ESPECIALLY if the creator is unknown)
- Printed books with lists of names and dates, but no narrative and no sources
This is my professional, certification-bound, genealogy institute educated self talking to the enthusiastic hobbyist I was just a few years ago. If this applies to you, too - listen up! These are NOT valid sources!