Missing Person · Unknown
92 years waiting · since 1933
Missing Person: Joseph Laurence Halpern
Justice is overdue — the trail went cold in 1933, but the truth hasn't.
NamUs case MP2797. Missing person: Joseph Laurence Halpern. Last known contact: 1933-08-15 in Estes Park Vacinity, Larimer, CO. Circumstances: Disappeared on August 14, 1933 while hiking in Rocky Mountain National Park near Taylor Peak.Unsubstantiated reports place him in Phoenix, AZ in December of 1934, with the Lewis Brothers Circus in Michigan in the summer of 1935, traveling with CCC near Alliance, Nebraska in May of 1935.He may have used the alias Louis Hollenbuck and was called "teacher" by co-workers. He was also a computer at the Aberdeen Proving Grounds in 1932. Demographics: 22 years, Male, White / Caucasian. Physical description: 5 ft 8 in, 165 lbs, hair: Brown, eyes: Brown. Clothing and accessories: Accessories: Had an army knapsack with him.; Clothing: Light blue shirt, light brown trousers. One report notes white shirt with blue stripes.; Footwear: Heavy shoes or mukluks.. Investigating agency: Rocky Mountain National Park Service | 1933-08-15.
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#2532
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Case Information
Incident:August 15, 1933
Last Updated:July 9, 2026
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Phone: 9705861206
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Case Information
Incident:August 15, 1933
Last Updated:July 9, 2026
Have Information?
Any information, no matter how small, could be crucial to solving this case.
Phone: 9705861206
You can remain anonymous