- IBM OS/2 Warp 4.0 build 23Q - definitely build 23, need to confirm the Q part
- Microsoft Entertainment Pack volume 1 - the original MEP from 1990/1991, we only have volume 2 ATM
- Microsoft Entertainment Pack volume 3 - ditto
- Microsoft Flight Simulator 4.0 - this is the real FS 4.0, the one on the FTP is actually 4.0b
- Microsoft FoxPro for Windows 2.5 beta
- Microsoft MS-DOS 5.0 build 432 - a better copy with all 3 install disks as opposed to current custom bootdisk
- Microsoft Video for Windows 1.0 build 95 - the earliest version of VfW I've found so far
- Microsoft Visual Basic 2.0 Professional - the 5.25''-1.2MB release
- Microsoft Windows 3.0 RC6
- Microsoft Word for Windows 1.1 - the one currently on the FTP is actually 1.1a
- Microsoft Word for Windows 2.0b
Here's a teaser: