They remain relatively undiscoverable and at risk for destruction, however, because of their restricted content and challenging media formats.
Lorraine Dong, Polina Ilieva, Aimee Medeiros 2018, 'Data dreams: planning for the future of historical medical documents', Journal of the Medical Library Associationhttp://jmla.pitt.edu/ojs/jmla/article/view/444. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)