This is a recording of the MET broadcast on March 12, 1949, complete with commentary by Milton Cross (but without the intermission features). What a broadcast!
The performance of Puccini's Gianni Schicchi is very good although Italo Tajo is not in the same class as Tito Gobbi or Giuseppe Taddei. Here Tajo is classified as a baritone, but his (bass) vocal quality just doesn't seem right to me for the role and his way with the text is not as pointed as either of the baritones I've mentioned. The other parts are in good hands (throats?) and it is luxury casting to have Di Stefano and Albanese as the young lovers. The conducting of Antonicelli is fine.
After Intermission we get Strauss' Salome with Welitsch in the title role, Thorborg as Herodias, Jagel as Herod, Janssen as John the Baptist and Brian Sullivan as the soldier Narraboth. The orchestra is larger for Strauss than for Puccini and with Fritz Reiner on the podium it sounds like a completely different ensemble. Everyone is at the top of his/her game and the performance is electric. Welitsch's diction and vocal acting are superb and although she may not look 16 in the publicity photo she is vocally and histrionically convincing. She is sensational, seeming to tire somewhat toward the end of the opera, but even that quality seems an outgrowth of the drama.
The broadcast sound is certainly not state of the art and so does not do justice to Strauss' orchestral writing, but the voices are clear and rarely covered. After a few minutes I was so completely drawn into the performance that the sonic limitations disappeared. Highly recommended.