How to obtain double density diskettes
This information was provided by Claris Corporation on 16 March 1998, and incorporated into Apple Computer's Tech Info Library.
ClarisImpact ships on high density diskettes. 800k replacement disk are available and can be sent for free to any customer who requests.
A postage-paid card with an offer for the 800k disks should have been included in the ClarisImpact packaging.