Mefistofele (Boito) and Doktor Faust (Busoni)

[Michè]

Hello every musician, I need for my personal research a score of Arrigo Boito's Mefistofele and Ferruccio Busoni's Doktor Faust (piano and vocals or full score is indifferent).
I have already seen of a voice of IMSLP entitled "Works involving Faust": it may be very good if this germinal project (are in fact present only two or three operatic and oratorial titles, between which Schumann's Faustszenen and Gounod's Faust) assumed a bigger weight!
Thanks for all (readers and, of course, repliers)! Have a good musical life
Michè