Copyright notes

Resources:

• Copyright and Cultural Institutions
• Copyright Term and the Public Domain in the United States
• International copyright
• rightsstatements.org 

General information specific to Digital Collections:

• No copyright-US
  • No known copyright-post 1923
  • Example record
    • https://digital.sciencehistory.org/works/x059c8431
• Public domain
• Pre-1923 only
• No known copyright
  • Lack of evidence for renewal
  • Example record
    • https://digital.sciencehistory.org/works/zw12z576b
  • Check year of renewal (year required and following year)
    • https://onlinebooks.library.upenn.edu/cce/
    • https://onlinebooks.library.upenn.edu/renewals.html