Card printing

 https://net54baseball.com/forum/content/printtingprocess.html

https://sabrbaseballcards.blog/2017/01/04/they-literally-dont-make-cards-the-way-they-used-to/

https://www.net54baseball.com/showthread.php?t=82023

https://www.sportscollectorsdaily.com/antique-printing-processes-identification-part-4-6-color-lithography/