The medieval studies which Wagner had begun for his work at the libretto of Tannhauser bore rich fruit in his next opera Lohengrin, in which he also developed his principles on a larger scale and with a riper technique than hitherto.
He made the acquaintance of Father Petau, Father Sirmond and the brothers Dupuy, who turned his attention towards medieval studies.
There are two Powell's in Chicago and the stores primarily specialize in academic and scholarly tomes, including a good collection on medieval studies and classics.
