Claudio Arrau - Mozart Sonata in D Major Mystery Performance

I found this recording on a very old (paper backed) 5" reel of Scotch 100. There is significant noise which I made an attempt to reduce but only could marginally improve.
The writing on the box has faded over the decades so I have no information on the date or venue. It appears to be a radio broadcast, but most of the announcer is cut off.
Do you recognize this performance? Help us figure it out!

[@johnmichel3676]

Minneapolis newspapers from November 1947 confirm this performance took place on November 18, 1947, at Northrop Auditorium as part of the University of Minnesota's new "Master Piano" series. KUOM, the University's radio station, normally signed off back then at 6 p.m., and contemporary newspaper radio listings show they did, indeed "sign off" at 6 p.m., but then signed back on at 8:30 p.m. just for this live broadcast! The Mozart Fantasy in C Minor was the opening work on the first half of program, followed by Beethoven's "Eroica" Variations, then Beethoven's Piano Sonata No. 32; on the second half Mozart's D Major Sonata and Beethoven's Piano Sonata No, 26 ("Les Adieux").

[@jagareco]

Those recordings were delivered to the Arrau corporation, in Chillán, Chile, by two friends and me.

[@jagareco]

By the way, some years ago I restored many reels with some Arrau inedits, entire recitals. Luckily it was easy to identify the recitals by the works included

[@jagareco]

Great!!!! I'll do my best to identify the recital. Can you check what the announcer says before and after what you upload?

[@MarchantTapeArchive]

Unfortunately that's all I have! I only edited out some lurching tape noise.

[@jagareco]

@@MarchantTapeArchive by the way i have a lot of recordings, so if you are searching some let me know