28/06/2014: Gertrude's Secrets v1.3 3.5" Disk Image Archived

Thanks to Stavros Karatsoridis, who recently spotted I added an archive for Gertrude's Secrets, but no 3.5" disk image, we've been able to fill the gap with v1.3 of the educational classic. There is definitely v1.4, which is hard drive installable and ProDOS friendly however, so if anyone has that, that too will be added to the archive.