Hafen, Leroy Reuben 1893-1985 Made first modern time descent of Caverno del Oro. Denver Westerner's Roundup v.10 #7 July 1954 p.7-10 Former Colorado historian to receive honor. Post Dec. 27, 1954, p.7 History group plan to honor ex-Coloradan. RMN Dec. 27, 1954, p.29 State historian `'or 30 years will retire July 1. RMN May 14, 1954, p.70 Post May 14, 1954, p.25 Noted Western Historian packs his books. RMN June 10, 1954, P-34 (Port.)
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