Let me caution everybody on their bibliographies: You can certainly keep it to 2 entries only, if you desire:
- Grillo + 1 new source, for Leonardo da Vinci writers
- Dalton + 1 new source, for Younger Dryas writers.
If you include more sources, it is acceptable, but only from Science or Nature. I do NOT want to see any bibliography items from MSNBC.com or Wikipedia or anything like that. Consider them to be contraband. We are writing from scholarly journals only, Nature and Science. I will mark down any paper I see with contraband.