A semi-complete, alphabetical list of candy bars distributed in the U.S. Most are still available, but some are no longer in production.
From Wikipedia: "A chocolate bar is a confection in bar form comprising some or all of the following components: cocoa solids, cocoa butter, sugar, milk. In addition to these main ingredients, it may contain emulsifiers such as soy lecithin and flavors such as vanilla.
In most of the English-speaking world, chocolate bar also refers to what is typically called a candy bar in American English. This is a form of confectionery usually packaged in a bar or log form, often coated with chocolate, and sized as a snack for one person. But within that term, a wide variety of products exists, ranging from solid chocolate bars to multiple layerings or mixtures of ingredients such as nuts, fruit, caramel or fondant containing no chocolate."