There are some works that may touch on interracial relationships in literature. For example, some novels explore the themes of love and family across different races. However, simply categorizing it as 'black cock for white wife' is a rather vulgar and reductive way to look at interracial relationships in literature. The real focus in good literature is often on the deeper emotions, cultural clashes and reconciliations, and the growth of the characters within such relationships.
I'm not aware of any specific 'black cock for white wife stories' as such a title seems more like a demeaning and inappropriate generalization. But in general, there are interracial relationship stories. Like in 'Guess Who's Coming to Dinner', it deals with a black man and a white woman's relationship in the context of family and society, highlighting the challenges and acceptance of interracial love.
Rather than using this rather offensive term, we can look at interracial relationship stories more broadly. Some stories might show how a black man and a white woman meet and fall in love in a multi - cultural society. These stories can be about breaking down racial barriers, facing prejudice together, and building a future based on mutual understanding and love. For instance, there could be stories set in modern cities where different races interact daily, and love can blossom in unexpected ways.