Beethoven: Quartet No. 6 (Coolidge Quartet)

Happy Beethoven's Birthday! Here is my latest Coolidge Quartet find, another in their aborted series to record all the Beethoven string quartets (which stopped short halfway through, with No. 8).  This is the last of the "early" quartets (Op. 18), and the Coolidge Beethoven set which had the shortest catalogue life (since it was the last issued of their Op. 18 sets, all of which were deleted during the Second World War, unlike their two successors):

Beethoven: Quartet No. 6 in B-Flat, Op. 18, No. 6
The Coolidge Quartet (Kroll-Berezowsky-Moldavan-Gottlieb)
Recorded December 19, 1939
Victor Musical Masterpiece set M-745, three 78-rpm records
Link (FLAC files, 59.46 MB)
Link (MP3 files, 42.73 MB)

This recording would appear to have been made at the same time as that of the Beethoven quartet which preceded it, if the proximity of its matrix numbers is any indication.  Said matrix numbers can be found here at the British Library website (as can the recording itself...but not for us poor Americans!).