The sources of this package are the official Arch Linux logos and the official GNOME, Mint-X, Ubuntu-Mono-Dark, and Humanity icon themes. The Arch Linux logos are permitted for non-commercial use. The GNOME and Mint-X, Ubuntu-Mono-Dark, and Humanity icon themes are open source.

Credits:
https://www.archlinux.org/art
https://github.com/linuxmint/mint-x-icons
http://bazaar.launchpad.net/~ubuntu-branches/ubuntu/wily/ubuntu-mono/wily/files
http://design.ubuntu.com/brand/ubuntu-logo
https://xubuntu.org/resources/
https://developer.android.com/distribute/marketing-tools/brand-guidelines.html
https://github.com/dart-lang/logos
https://www.python.org/community/logos/
https://www.ruby-lang.org/en/about/logo/
https://github.com/logos
https://www.dash.org/promotional-graphics/

Feel free to modify and distribute this package as long as you respect the sources' conditions. :)
