Frank P. Ramsey was a forerunner of subjective Bayesian decision theory in many respects, solving early optimization problems in growth, defending subjective probability, and giving probably the first Value of Information proof.
Due to how long ago he worked and his premature death, his papers are hard to find, so I spent some time going through Wikipedia & other sources, and obtaining copies of most of his corpus and other relevant papers:

Statistics/decision theory:

Economics:

Math:

Philosophy:

Psychology:

2004, “Freud in Cambridge”


F. P. Ramsey: Philosophical Papers, ed. 1990