Note 3 — HISTORICAL
Reading edition
Report on the ancient ruins of Southwestern Colorado. Tenth Ann. Rept. U. S. Geol. Surv. Terr. (Hayden Survey) for 1876, Washington, 1879.
Reading edition
Report on the ancient ruins of Southwestern Colorado. Tenth Ann. Rept. U. S. Geol. Surv. Terr. (Hayden Survey) for 1876, Washington, 1879.