https://edu.rsc.org/feature/paper-conservation/2020204.article

https://blogs.lib.unc.edu/rbc/wp-content/uploads/sites/4/2017/10/KIC-Image-0001-e1508943753928.jpg

https://oaktrust.library.tamu.edu/bitstream/handle/1969.1/195030/Zines_ch11.pdf?sequence=1

https://www.nps.gov/museum/publications/conserveogram/cons_toc.html

https://www.loc.gov/preservation/care/newspap.html

http://gzagg.org/wp-content/uploads/2014/02/zcjpg.pdf