I'm unlikely to be able to help with the recording but I'll do a physical search for the sheet music. It's astonoshing how much 'patriotic' music was published in WWII. There are probably books on the subject but it would appear that song writers/publishers may have been incented by the propaganda arms of sundry governments - or am I just cynical of the way the machinery of war operates? That comment was in no way meant to demean your quest or the efforts of the workers involved, merely the question of their exploitation.
In any event I'll check it out. Regards, John