References
USRIFLECAL30M1.com pulls together reference material and production research for collectors who want to understand the M1 Garand in detail.
Featured References

A six-book bundle centered on M1 Garand collector and owner reference topics, including both WWII and post-war coverage.
The package also includes practical assembly/owner guidance and a serial/data-sheet pocket reference for field use.

A focused IHC volume describing 1952–1956 production with detailed month-by-month discussion and full-color supporting material.
Includes large tabular datasets and rifle data sheets intended to help collectors evaluate originality and production context.
Additional Book References

Covers the period from development through September 1945, including Springfield Armory and Winchester production.
Written specifically for Garand collectors, with close attention to gas trap rifles, gas port conversion, and original configuration details.

Covers September 1945 through June 1957, including Springfield, International Harvester, and Harrington & Richardson rifles.
Especially useful for post-war rebuild context, Korean War production, and later collector identification work.

A detailed collector-focused reference that explains how to separate correct rifles from assembled mismatches.
Strong on production, issue history, and the physical details collectors inspect when evaluating a rifle.

A broad part-by-part overview organized by serial range and manufacturer.
Useful as a practical reference for gas trap rifles, sniper variants, rebuilds, and later special configurations.