Gblend-shadow.png: Made from https://wiki.gentoo.org/wiki/File:Gblend.png with the command from Gblend-shadow.txt License: CC-BY-SA/4.0
Gentoo-wordle-1.1.svg: Made from https://wiki.gentoo.org/wiki/File:Gentoo-wordle-1.0.svg with the non-transparent background removed. License: CC-BY-SA/3.0
gentoolinuxtm.svg: Gentoo word mark https://www.gentoo.org/inside-gentoo/artwork/gentoo-logo.html License: CC-BY-SA/2.5
reference-rendering.jpg: The result of arranging the three aforementioned images on the VistaPrint mug designer. License: CC-BY-SA/4.0