4E3. Copyright or production dates as distribution, release, broadcast dates (Distribution, Release, Broadcast Area - Dates of distribution, release, broadcast)
If the date of distribution, etc., is unknown, a copyright date or a production date can be used as a release date. If both the copyright and production dates are available, use the copyright date instead of the production date. Precede a copyright date with the letter "c." If a production date is used, make a note that the date is a production date.
245 00 $a New York City in a blizzard / $c Thomas A. Edison, Inc.
257 ## $a United States.
260 ## $a United States : $b Thomas A. Edison, Inc., $c c1902.
245 00 $a Smoldering sin / $c Roulette.
257 ## $a United States.
260 ## $a United States : $b [s.n.], $c 1925.
500 ## $a Date is production date; unable to verify if work was ever released.
If a copyright date or a production date is not used as a release date, it may be given in a note. See 7B11.
See also: