raw / notes

3 sources

1. Sweep of Lockhart's complete El Paso corpus for Three Rivers marks — negative-result inventory · 2026-07-26
2. Photograph: base of the H&H 3-lb Crystalvac jar showing the Owens-Illinois mark · 2026-07-26
3. Kevin Mackey — Corrections & Notes on Three Rivers Glass History (email) · 2026-07-24