[78-L] MARY LOU Question

[kil at roadrunner.com.invalid]

Does anyone have the Guy Lombardo recording of MARY LOU?
It is the old Abe Lyman song hit from 1926.
The Lombardo version can be heard on youtube, but the only information given is 1950.
Does anyone know if it was put out on 78, 45, 33?
What would the record number(s) be?
I've searched the Decca 78 numerical listing for 1950, but it is not listed.
It might be the obscure "B" side that is missing from that list.
Or it may only be an album cut on 33.
Any help appreciated.
RayK