- Zachary R. Fjestad (2012). Larson Brothers. Blue Book of Guitar Values. Blue Book Publications, Inc..
- John Thomas (2009). About Larsons. Larson Brothers Guitar Registry.
- Checklist of Plucked Stringed Instruments by Carl and August Larson (The Larson Brothers). National Music Museum, The University of South Dakota.
This category has the following 3 subcategories, out of 3 total.