The American Package Museum
The American Package Museum has and extensive collection of package design from the early decades of the 20th century. Chewing gum, shaving cream, cereal boxes, and more-- there is a lot to check out there. Although the collection is just an online exhibit, there are 3D views of many of the objects so you can get a closer look. It's really fascinating and amusing to see the branding and design of the past. It just shows us how far design has come-- and in my opinion how simple and sharp package design used to be.