Illume Umbra Research · Colorado Drop

Colorado · CBI Records Packet (1975–1976)

Combined reports, mutilation ledger, photo packet, and agency response materials released by the Colorado Bureau of Investigation in response to a CORA request.

Source: Colorado Bureau of Investigation (CBI)

What this drop contains

This packet contains primary materials released by the originating agency or compiled in the case file. Items are kept in their released form (redactions preserved).

Where present, contemporaneous newspaper clippings are included as discrete excerpts retained within agency files to document specific incidents or reporting. Periodical publications (such as magazines) are documented at the metadata level only, reflecting their presence in case materials without reproducing full published issues.

Originating Records Request

The request that generated this release. Included for provenance and scope.
Note: requester contact details (street address / phone) may be redacted for privacy. The request text and scope are unchanged.
Records Request
UFO sightings and cattle mutilation investigations
Agency: Colorado Bureau of Investigation
Submitted: 2025-12-12
Status: responded
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Agency Responses

Official agency correspondence and cover letters associated with this release.
Response
Official Response / Cover Letters – Colorado
Format: PDF
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Reports

Primary records released by the originating agency, preserved in their released form (redactions unchanged).
Report
CBI Letter – Case Summary & Guidance (Redacted)
Format: PDF
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Report
Combined Reports Packet 01 – State Lab / Vet / Sheriff (Redacted)
Format: PDF
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Report
Combined Reports Packet 02 – State Lab / Vet / Sheriff (Redacted)
Format: PDF
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Report
Mutilation Incident Ledger – Colorado (Redacted)
Format: PDF
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Report
Newspaper Articles — Combined Clippings (CBI File)
Format: PDF
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Photos

Photographic materials included in the case file. Sensitive details may be redacted.
Photo Packet
Scene & Autopsy Photos – Colorado Cases (Redacted)
Format: PDF
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Referenced Press

Non-government publications documented as present in the agency case file. These entries are metadata-only unless otherwise noted.
Press Reference
Montana Farmer–Stockman — March 3, 1977
Publication: Montana Farmer–Stockman
Issue date: 1977-03-03
Role: Contemporaneous agricultural press reference
Agricultural trade publication issue referenced within CBI investigative materials for contextual background on livestock conditions and reporting.
Access note: Full magazine content is not reproduced. This entry documents the presence of the issue as part of an official investigative file.
Press Reference
Montana Farmer–Stockman — March 17, 1977
Publication: Montana Farmer–Stockman
Issue date: 1977-03-17
Role: Contemporaneous agricultural press reference
Follow-up agricultural reporting contemporaneous with ongoing livestock investigations, retained in CBI case files for background reference.
Access note: Full magazine content is not reproduced. This entry documents the presence of the issue as part of an official investigative file.