The collection of icons here is rather large; so large, that downloading the full directory listing and icon display may take a little while depending on your connection speed. Feel free, though.
I'd like to also recommend an additional excellent collection of icons, emoticons and clipart.
The files in this collection are part of William Stearns' software archive. If any of the links on this page do not work, you may be viewing an incomplete mirror. There is a complete list of the mirror sites at the starting page for this mirror and at the primary mirror.