Mike,
 
Neither disc was issued; Sony has a complete run of the ML/MS series, but
not these catalogue numbers. The Mendelssohn MSND music that was paired on
LP with the Schubert WAS issued on a two-track stereo tape, though, so the
stereo versions were likely more than the mere figment of someone's
imagination; they probably existed at one time.
 
Rich Kaplan
 
 
In a message dated 9/25/2012 3:06:22 P.M. Central Daylight Time,
[log in to unmask] writes:

From my database - don't know if the disc was ever actually issued ...


Mike Gray
Data
ID Composer Work Number De Bellis 78 Prefix / Suffix 78 matrix Date
Initial Label Ensemble Artists Conductor Producer / Engineer
146812 GLIÈRE Ilya Mourometz, Symphony No. 3 in B minor, op. 42
 MS-6045


11/25/1956 Columbia Philadelphia Orchestra
Ormandy, Eugene

147356 SCHUBERT Symphony No. 8 in B minor, D759 'Unfinished'
MS-6042


11/25/1956 Columbia Philadelphia Orchestra
Ormandy, Eugene