(Can I make a second request for you to use the native quoting function? You’re making more work for the rest of us.)
Oral contracts in general are legitimate under state contract law. However, oral agreements are not effective in certain specifical contexts, for example, under the Statute of Frauds. And, specifically, as I said, the Copyright Act of 1976, which preempts all state law in the relevant field, states that agreements that a work is a work made for hire must be written. This overrides the general effectiveness of oral contracts. I’ll quote the relevant statute again: