1980s-90s wire photo negative questions

[steve B]

The color separations are for making the four printing plates needed.

I'm not sure you could get a color photo print from them.
But, it should be possible to scan them in monochrome, change to the right color and overlay them to get a computer print.

The individual ones should be printable photographically, if you can find a lab that would make contact prints.
The black would be the best, but it will only produce a newspaper quality halftone.

Unless they provided full photographic four color negatives so the newspaper could do the halftone screening themselves. Then you could get a passable print from the black one, but it might look a little off.