Heat the oven to 350 degrees F. Grease two loaf pans (one large, one medium).
In a large bowl combine the flour, sugar, soda, cream of tartar, salt and cinnamon.
Add the vanilla, pumpkin and oil. Mix.
Add the eggs. Mix until well combined.
Stir in chips or nuts if desired.
Pour the batter into the prepared pans.
Bake for 50 - 60 minutes, until baked through.
Allow to cool before slicing.
Store in an airtight container at room temperature or in the freezer for long term storage.