There is an Effective Altruism Books List on Goodreads, suggest more books and vote on the ones that are already on it.
Came here by searching for Frank Ramsey on the forum. I considered writing a post about the same biography you mentioned for the forum. It's very humbling to see how much he already thought of, which we now call EA. A related work I can recommend is "Exact Thinking in Demented Times: The Vienna Circle and the Epic Quest for the Foundations of Science"
Such a good list, have meant to write one myself for a while and am pleased that you did it :)
Hey Linn, I wrote you a private response with thoughts about this :)