Despite having posted the map below only a few weeks ago--which I just remembered--I wasn't clear on the historical routings of Sherman Way. You have found the organ factory,
MR. The northwest corner of Sherman Way and Oxnard it is, even more so since I've now run across descriptions of the Johnston/Morton building as having been near the corner of Aetna Street as well as at 6001 SW. There is also the definitive mention in the
Daily News on October 30, 1944, of the Arthur Zweebell company, a manufacturer of radio cabinets, having "purchased the large industrial plant at 6001 Van Nuys Blvd., former home of the Robert Morton organ plant." I wonder when the building was demolished? There were reports of it being considered as a prospect for conversion to a brewery after the repeal of Prohibition, but I don't know if anything came of that.
This is a fragment of the map I posted
here:
LAPL