I have great memories of Reed's Root Beer and Butterscotch discs. Very tasty stuff. From what I understand, Reed's finally stopped being made just a few years ago.
This comes from the "Munktiki Collection", a large lot of consumer goods packaging saved and stored by Californian Paul Nielsen during the 1970's. A collection I recently acquired and will be documenting here.
For more on Paul's current activities, check out www.munktiki.com.