AppleWriter users can upgrade to AppleWorks 3.0 by contacting Claris Corporation Customer Relations. Additionally, customers who already own ANY version of AppleWorks may upgrade to AppleWorks GS.
You can find the address and phone number for Claris Corporation in a separate article in the Tech Info Library. Search under "Claris".
TIL article#17159: "
Locating Vendor Information", can help you search for a particular vendor's address and phone number.