+* The ALT Linux icon was donated by the ALT Linux developers (see
+ http://www.altlinux.com).
+
+* The ChromeOS icon (os_chrome.icns) is a cropped version of the icon from
+ Wikipedia
+ (http://en.wikipedia.org/wiki/File:Google_Chrome_icon_and_wordmark_%282011%29.svg),
+ which in turn is Google's original work.
+
+* The icon used (at different sizes) for both the generic network OS and
+ for the network-boot badge is from
+ https://www.iconfinder.com/icons/37048/intranet_network_icon.
+
+* The icon used for the network-boot tool on the second row comes from
+ https://cdn2.iconfinder.com/data/icons/oxygen/48x48/devices/network-wired.png.