There are two files to retrieve (ct1350#1.zip=Disk 1)
They are from original Sound Blaster disks with the part number
0401350240 for disk #1
0401350250 for disk #2
Hope these aren't too late for you!
The following files are found inside the driver download file.
|DISK.ID||72 bytes||14 Oct 1992|
|README.TXT||11.8 KB||14 Oct 1992|
|README.COM||2.0 KB||11 Aug 1992|
|INST-HD.EXE||130.3 KB||1 Sep 1992|
|INSTALL.001||539.9 KB||14 Oct 1992|
|TEST-SBC.EXE||42.1 KB||17 Apr 1992|