The classic milk chocolate bar with four separate sections (caramel, vanilla, peanut, and fudge) was originally made by Necco. After a brief disappearance, it was revived and is now produced by the in Sudbury, Massachusetts.
If you are near Sudbury, MA, you can visit their factory store to watch them being made and buy "Oopsies" (discounted bars with slight imperfections). They are also often found at regional New England retailers like Duck Soup . 2. Skybar Wine Preservation Systems
Depending on which you are looking for, here is where you can find them: 1. Sky Bar Candy Bars