In leaked NT4 source code archive, there is an incomplete SDK of Microsoft Internet Extensions for Win32: March 1995 Alpha Release.
I wonder how many releases they actually released?
[REQ] Microsoft Internet Extensions for Win32 SDKs
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Please read the following rules before posting a download request in this area:
1. Don't post a request if you have under 10 posts as stated in the rules. If you do anyway, it will be deleted without further notice.
2. Requests for anything against our rules will not be entertained and you will be warned.
3. Check that we don't already have the file on our FTP servers by using the database linked in the navigation.