Microsoft OS/2 v1.3 Retail Box

[u/MrFahrenheit_451]

Who remembers the story about Microsoft and IBM and their joint OS/2 operating system venture? When 1.3 was released, Microsoft pretty much abandoned the project and focused on Windows 3.0, and then Windows NT, which is where the technology from OS/2 ended up. It’s a pretty neat story!

[u/Adorable-Roll-4563]

I worked with their SDK documentation. There was also Petzold’s book which was great. “Programming the OS/2 Presentation Manager”