Not related to Lugers, but rather to the WW-II era...
I recently found a collection of over 900 recordings on .mp3 files transferred from US Army "V-Disks".
These were recordings specially made for distribution to US forces overseas, and contain performances of some of the most famous artists of the era.
You can listen to them online, or download .zip files that contain 100 recordings each.
First 100 (with links to the rest) are here:
http://archive.org/details/V-discs1-991943-1944
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Igitur si vis pacem, para bellum -
- Therefore if you want peace, prepare for war.