I have been reorganizing the DaveCave(tm) and ran into some pretty cool stuff.
This is an original distribution disk for CP/M-86 -- a precursor to MS/DOS. The format is an eight inch floppy disk (the gray bar is a six inch machinists rule). Disk capacity at that time was a whopping 128KB but they were able to get it up to 1.2MB with quad density and using both sides.
This is my copy of WordStar.
Love it or hate it, WordStar was the primary word processing application of its time. Since it was used on a text based screen, your formatting and movement commands were entered through the keyboard as a set of [CTRL]+key commands. Once you got up to speed, it was very very fast. I also own the MailMerge and SpellStar disks. There was a book put out that allowed you to hack the printer table and enter your own width information. This allowed for true-proportional printing. Did a lot of desktop publishing and printing back then...