Where can you find Weight Watchers plan booklets from 1990?

The WW website offers an extensive amount of free information; however plan booklets and information from 1990 will likely not be available. You may try contacting customer service to confirm that this resource does not exist on their site: WW.com

You may also use an internet search engine and filter results of WW or Weight Watchers booklets only prior to January 1st, 1991 which can provide resources, although most plan materials are currently distributed digitally to all active members.