Microsoft OS/2 SDK 1.10 
Released April 1989 by Microsoft
For DOS with Microsoft C

This was the final standalone SDK, as development support was moved in to Microsoft's mainstream commercial programming products, or add on development products including:
- OS/2 Presentation Manager Softset
- OS/2 Presentation Manager Toolkit
- OS/2 programming reference manuals
- Microsoft Programmer's Library CD-ROM 
