MOS 6502 die photograph
Author: Pauli Rautakorpi
Source: https://commons.wikimedia.org/wiki/File:MOS_6502_die.jpg
License: Creative Commons Attribution 3.0 Unported
https://creativecommons.org/licenses/by/3.0/
Changes: resized derivative; displayed cropped, desaturated, and darkened with CSS.

IBM Plex Mono font
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License: SIL Open Font License 1.1
https://github.com/IBM/plex/blob/master/LICENSE.txt