Cited from writer (noun) page on Oxford Learner's Dictionaries:
the writer of this letter
a freelance feature writer for ‘Time’ magazine
In what situations is "writer of" or "writer for" used?
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Sign up to join this communityCited from writer (noun) page on Oxford Learner's Dictionaries:
the writer of this letter
a freelance feature writer for ‘Time’ magazine
In what situations is "writer of" or "writer for" used?
Thanks for @Kate Bunting and @FeliniusRex, who provide following comments which should answer this question.
In the first, the person has written the letter. In the second, the person has written some articles for the magazine - writer of would imply that they write the whole magazine on their own! – Kate Bunting
You are a writer for something when you contribute individual things to the whole; one is a writer for Time. You are a writer of individual things. – FeliniusRex