Note 163 — EARLY DEVELOPMENT OF THE NATIONAL MONUMENT
Reading edition
Superintendent’s Monthly Narrative Reports for January 1965 and April 1967; 1958 date deduced from various government memorandums 1956-1958.
Reading edition
Superintendent’s Monthly Narrative Reports for January 1965 and April 1967; 1958 date deduced from various government memorandums 1956-1958.