Hi Jackson,
There are 5 good resources that I can recommend for good period labels, 1. Sullivan Press, 2. Dixie Leatherworks 3. A friend of mine in the UK who goes by the handle of Absolom Grimes (makes the best repro western labels Banda down.) he is on theshootists.co.UK 4. High res 300-600 dpi scans of originals that I clean up in Photoshop. 5. The library of congress. I got all the featured labels here from the LOC and had to make the packaging myself.
-Dave