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Public Domain? I believe they are.I love these on XM radio, didn’t saline they’re online. Free, I hope.
archive.org/details/oldtimeradioPublic Domain? I believe they are.
In general? yes, AFAIK. Apparently, radio broadcasts did not qualify for copyright protection before 1972 (honestly, as off-air recording either didn’t exist or was so prohibitively expensive to the common listener till then, nobody thought copyright protection was necessary). However, scripts could be copyrighted, and that would make a case for the recording to be under copyright. This happened infrequently, though, as, again, most producers didn’t want to go through the hassle or expense to formally copyright-protect something that they thought would only be heard once or a handful of times firmly under their control. (NB: This was before the current law which claims that a work is automatically under copyright at the time of its creation, thereby eliminating the need for formal copyright registration.)Public Domain? I believe they are.