Archive details and rights
Historical footage from a public archive, not material produced by this site. The licence, credit and source below are recorded after each item is checked; the original record can be opened to verify.
Public domain · credit requiredPrelinger Archives · Coronet Instructional Films（1949）
- Licence
- Public domain · copyright expired ↗
- Credit
- Prelinger Archives · Coronet Instructional Films（1949）
- Original ID
archive.org Exercise1949- Source record
- Open the original record ↗https://archive.org/details/Exercise1949
- Filmed on
- 1949
Sources
Public material used for fact-checking; external links open in a new window.
- archive.org 条目 ↗https://archive.org/details/Exercise1949