The answer is BILL GATES The corresponding square is hotel puzzle by the whole team This hotel is named after "Doubletree" because each of the answers has some doubled letters. We don't give much of a hint for ordering the puzzles here because, hey, we're at MIT and talking about monopolists. This should be automatic. house JA(BB)ERWOCK house POMPE(II) prop. WI(LL)IAMS prop. MCMI(LL)AN prop. GU(GG)ENHEIM house PATRICI(A A)RQUE(TT)E house N(EE)DLE(SS)