Workbench 1.3.3 starting up
Workbench 1.3.3 loaded into RAM, with the new Extras Disk inserted into the 2nd disk drive.
The contents of both Workbench 1.3.3 and Extras 1.3 Disks.
Workbench 1.3 as installed on a hard disk
For comparison purposes, here are several of the competing Graphical User Interfaces of the time:
Microsoft Windows 2.0
Apple Macintosh System 6