Now in progress!! The great Art-icles Project!! Visit my sandbox for a Sneak Preview!!
- PD-old-100 – the author died more than 100 years ago
- PD-US-unpublished– never published prior to 2003
- PD-1923– published before 1923
- PD-US-no notice – published without a copyright notice prior to 1978
- PD-US-not renewed – published between 1923 and 1963 and copyright was not renewed
- PD-US-1978-89 – published in the United States between 1978 and March 1, 1989 with neither copyright notice nor registration within 5 years