[1] While considered a New England classic and a Pennsylvania Amish tradition,[2] whoopie pies are increasingly sold throughout the United States.

[3] "Gob" (the term indigenous to the Pittsburgh region) has been trademarked by the Dutch Maid Bakery in Johnstown.

[4] The world's largest whoopie pie was created in South Portland, Maine, on March 26, 2011, weighing in at 1,062 lb (481.7 kg).

[13] A clue into how the possibly Amish dessert got to be so popular in New England can be found in a 1930s cookbook called Yummy Book by the Durkee Mower Company, the manufacturer of Marshmallow Fluff.

In this New England cookbook, a recipe for "Amish Whoopie Pie" was featured using Marshmallow Fluff in the filling.