Here's my travelling collection of icon-sized bitmaps, accumulated since 1989 and entirely drawn by myself and other people I've worked with. Only the black and white ones are presented here, for compatibility with common Web browsers.
Some of these icons are clickable for download and public use. The others are handmade copies of trademarked work, provided for the authors' own individual use and enjoyment.
If you click for download and your web browser just displays the icon again, then select "Save As..." in your browser and make it save the file.
If none of the icons display, it's probably a browser issue. These are old formats, after all.
I feel I should point out that there are trademark holders of the original work for all the icons not marked for public use. These trademark holders will not approve of any means of taking the icon for your own use. In particular, you could use anonymous FTP to the site which you see for the downloadable icons, or you could retrieve these icons from your browser's cache, but that would not be approved. You would be in violation of copyright law if you dared to do this, even if it were for your own use. You would be prosecuted if you were caught and the copyright holder felt it worth their while. So there.
If you wish to claim copyright to any of the downloadable work, kindly be prepared to provide evidence that you are or have been one of the following: