This Internet Explorer 4.0 Cross-Platform CD turned up in a box of AOL disks that were in my basement. The CD is still in its original shrink wrap.
Wikipedia has quite a bit to say about IE 4. This distribution was an early salvo in the browser war between Microsoft and Netscape.
Something notable about this period piece is written on the back of the CD package. Notice the spelling of the operating system in the second bullet item.