I found this on Futility Closet's blog here.
In 1896, folklorist Fanny Bergen collected a bunch of American superstitions. Here are a few:
-If you sneeze at table with the mouth full, an acquaintance will die soon. (Virginia)
-If your shoe comes untied, your sweetheart is talking about you. (Alabama)
-To go back into the house for something after starting on a journey is unpropitious. To have it brought out is all right. (Iowa)
-To dream of bread is good luck. (Boston)
-If you drop the tea-towel, it is a sign of company. (Pennsylvania)
-Pass a baby through a window and it will never grow. (South Carolina)
-Dimple in chin, devil within. (Maryland)
-If you are a bridesmaid three times you will never stand in the middle. (New York)
Beware of that man,
Be he friend or brother,
Whose hair is one color
And moustache another.
I wanted to read more, but apparently the Internets only have audio files of the book being read aloud, and ain't nobody got time fo' that. If anyone knows of any other superstitions, I'll add them to the list.