Why does White Lake have two dates?

Introduction

One of the most confusing details in the White Lake UFO file is also one of the smallest: the date. Some accounts place the sighting on 14 September 1952, while others give 14 August 1952. For readers trying to follow the history of one of South Dakota’s best-known Project Blue Book cases, that difference matters more than it first appears.

The White Lake report survives largely through archival paperwork rather than a rich chain of newspaper coverage or multiple witness statements. Because the documentary trail is thin, later writers often depend on a handful of references that trace back to the same Air Force records. When those references disagree, the disagreement can affect chronology, case catalogues and claims about how the sighting was investigated. The White Lake date conflict is therefore a useful example of how UFO researchers weigh primary records against later retellings and why source trails matter as much as dramatic descriptions.

The September date in Blue Book records

The strongest evidence points to 14 September 1952 as the date attached to the original Project Blue Book case.

The surviving Blue Book report for White Lake identifies the sighting as occurring on 14 September 1952 and places the observation between roughly 7.00 and 7.30 p.m. The document is the closest surviving source to the original Air Force investigation and forms the foundation for most later discussions of the case. [Wikimedia Commons]upload.wikimedia.orgCommons2 locationWikimedia Commons2 locationJanuary 6, 2015 — Object was sighted through "high power" binoculars. 4. Observation made from White Lake, Sou…Published: January 6, 2015

The same September date appears in later catalogues that were compiled directly from Blue Book material. The National Investigations Committee on Aerial Phenomena (NICAP) list of Blue Book “unknowns” records Case 2089 as White Lake, South Dakota, on 14 September 1952. [NICAP]nicap.orgNICAPComplete List of Project Blue Book's Unsolved Cases2089 September 14, 1952 White Lake, South Dakota 2092 September 14, 1952 El Paso…Published: September 14, 1952

Researcher Brad Sparks’s extensive catalogue of Blue Book unexplained cases also lists Case 2089 as occurring on 14 September 1952. His summary matches the familiar White Lake description of a Ground Observer Corps watcher observing a red cigar-shaped object through binoculars for roughly half an hour. [Internet Archive]archive.orgBrad Sparks Comprehensive Catalog of 1,600 Project Blue Book UFO Unknowns14, 1952. White Lake, South Dakota. 7 p.m. GOC observer L. W. Barnes, using binoculars saw a red, cigar- shaped object, with…Read more…

The consistency matters because all three references point back, directly or indirectly, to the Air Force archival record. They are not independent eyewitness accounts, but they do represent separate efforts to catalogue the same government file. The case number remains the same across these sources, further suggesting that they are discussing a single event rather than two different White Lake incidents. Wikimedia Commons [NICAP]nicap.orgNICAPComplete List of Project Blue Book's Unsolved Cases2089 September 14, 1952 White Lake, South Dakota 2092 September 14, 1952 El Paso…Published: September 14, 1952

The August date in later writing

The main source of the competing August date appears to be a respected secondary work rather than the underlying Blue Book paperwork.

Historian Lawrence H. Larsen’s article on Air Force UFO investigations in the Great Plains, published by the South Dakota State Historical Society, cites “Case 2089, White Lake, S.Dak., 14 Aug. 1952”. The note points readers to the Blue Book microfilm rolls but does not reproduce the full case file itself. [South Dakota Historical Society Press]sdhspress.com42. Case 2089, White Lake, S.Dak., 14 Aug. 1952, ibid.. Roll 15. 43. Case 164, Hecla, S.Dak…Read more…

That reference has attracted attention because Larsen’s article is one of the more serious treatments of South Dakota UFO history. Readers naturally assume that a scholarly publication would have checked the date carefully. Yet the August citation sits awkwardly beside the surviving Blue Book document and the major Blue Book catalogues, which consistently use September. [South Dakota Historical Society Press]sdhspress.com42. Case 2089, White Lake, S.Dak., 14 Aug. 1952, ibid.. Roll 15. 43. Case 164, Hecla, S.Dak…Read more… [Wikimedia Commons]upload.wikimedia.orgCommons2 locationWikimedia Commons2 locationJanuary 6, 2015 — Object was sighted through "high power" binoculars. 4. Observation made from White Lake, Sou…Published: January 6, 2015

Several explanations are possible:

There is no widely cited archival document showing a separate White Lake Case 2089 event on 14 August 1952. The known case number, description and Blue Book record all continue to point toward September. [South Dakota Historical Society Press]sdhspress.com42. Case 2089, White Lake, S.Dak., 14 Aug. 1952, ibid.. Roll 15. 43. Case 164, Hecla, S.Dak…Read more… [Wikimedia Commons]upload.wikimedia.orgCommons2 locationWikimedia Commons2 locationJanuary 6, 2015 — Object was sighted through "high power" binoculars. 4. Observation made from White Lake, Sou…Published: January 6, 2015

Why the discrepancy matters

In many historical subjects, a one-month error would be little more than a footnote. In UFO research, especially for a sparsely documented state case, it can change how researchers connect events and evaluate evidence.

Project Blue Book organised its records chronologically and by case number. Researchers often use dates to determine whether a sighting occurred during a broader reporting wave, near another military or aviation incident, or during periods of heightened public attention. A mistaken date can place a case into the wrong context. The National Archives notes that Blue Book records were arranged and preserved as investigative case files, making accurate identification of dates and locations especially important for later researchers. [National Archives]archives.govNational ArchivesProject BLUE BOOK - Unidentified Flying ObjectsAugust 15, 2016 — 25 Jun 2024 — Project BLUE BOOK has been declassified a…Published: August 15, 2016

The White Lake case illustrates this problem clearly. Because South Dakota produced relatively few famous Blue Book files, a single case can acquire outsized importance in state-level UFO histories. Once a date discrepancy enters the literature, later writers may unknowingly repeat it, creating the appearance of multiple sources when the information ultimately derives from one mistaken reference.

The issue also highlights a broader lesson about UFO documentation. Readers often focus on dramatic details such as the object’s shape, colour or behaviour. Historians and archivists frequently spend just as much time resolving basic questions of provenance: which document came first, who copied whom, and whether a later summary accurately reflects the original file.

How to handle conflicting UFO sources

The White Lake case provides a practical example of how researchers can deal with contradictory records without overstating certainty.

A useful hierarchy is:

Amazon book picks

Further Reading

Books and field guides related to Why does White Lake have two dates?. Use these as the next step if you want deeper reading beyond the article.

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The Report on Unidentified Flying Objects

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Browse more on Amazon: The Report on Unidentified Flying Objects UFOs and Government The UFO Experience

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1. Original investigative documents first. The surviving Blue Book report carries the greatest weight because it is the closest available record to the investigation itself. [Wikimedia Commons]upload.wikimedia.orgCommons2 locationWikimedia Commons2 locationJanuary 6, 2015 — Object was sighted through "high power" binoculars. 4. Observation made from White Lake, Sou…Published: January 6, 2015
2. Independent archival catalogues second. Lists compiled directly from Blue Book files, such as the NICAP unknowns catalogue and later archival studies, help confirm whether a date appears consistently across the documentary record. [NICAP]nicap.orgNICAPComplete List of Project Blue Book's Unsolved Cases2089 September 14, 1952 White Lake, South Dakota 2092 September 14, 1952 El Paso…Published: September 14, 1952
3. Later historical summaries third. Scholarly and historical works remain valuable, but they can contain transcription mistakes, especially when dealing with large collections of microfilmed records. [South Dakota Historical Society Press]sdhspress.com42. Case 2089, White Lake, S.Dak., 14 Aug. 1952, ibid.. Roll 15. 43. Case 164, Hecla, S.Dak…Read more…

Applying that approach to White Lake leads to a cautious conclusion. The evidence currently available supports 14 September 1952 as the date attached to the Air Force case file. The August date is best understood as a secondary-source discrepancy rather than proof of a separate White Lake UFO incident. Wikimedia Commons [NICAP]nicap.orgNICAPComplete List of Project Blue Book's Unsolved Cases2089 September 14, 1952 White Lake, South Dakota 2092 September 14, 1952 El Paso…Published: September 14, 1952 For the wider South Dakota UFO record, the episode serves as a reminder that even famous cases can rest on surprisingly fragile paper trails. The mystery is not only what witnesses thought they saw in the sky, but also how later generations reconstruct those reports from incomplete archives, duplicated summaries and occasionally conflicting dates.

Endnotes

1. Source: upload.wikimedia.org
   Title: Commons2 location
   Link: [https://upload.wikimedia.org/wikipedia/commons/c/c6/Project_Blue_Book_report_-1952-09-6383323-WHITELAKE-S-DAK.pdf](https://upload.wikimedia.org/wikipedia/commons/c/c6/Project_Blue_Book_report-_1952-09-6383323-WHITELAKE-S-DAK.pdf)
   Source snippet

   Wikimedia Commons2 locationJanuary 6, 2015 — Object was sighted through "high power" binoculars. 4. Observation made from White Lake, Sou...

   Published: January 6, 2015

2. Source: nicap.org
   Link: https://www.nicap.org/bluebook/bluelist.htm
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   NICAPComplete List of Project Blue Book's Unsolved Cases2089 September 14, 1952 White Lake, South Dakota 2092 September 14, 1952 El Paso...

   Published: September 14, 1952

3. Source: archive.org
   Title: Brad Sparks Comprehensive Catalog of 1,600 Project Blue Book UFO Unknowns
   Link: https://archive.org/download/BernardSieglerTechnicsAndTime1TheFaultOfEpimetheus/Brad%20Sparks%20-%20Comprehensive%20Catalog%20of%201%2C600%20Project%20Blue%20Book%20UFO%20Unknowns.pdf
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   14, 1952. White Lake, South Dakota. 7 p.m. GOC observer L. W. Barnes, using binoculars saw a red, cigar- shaped object, with...Read more...

4. Source: archives.gov
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   National ArchivesProject BLUE BOOK - Unidentified Flying ObjectsAugust 15, 2016 — 25 Jun 2024 — Project BLUE BOOK has been declassified a...

   Published: August 15, 2016

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6. Source: upload.wikimedia.org
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   States Air Force investigations from the early AMC period through...Read more...

7. Source: upload.wikimedia.org
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   Project Blue Book ArchiveThe Project Blue Book Archive contains tens of thousands of documents generated by United. States Air Force inve...

8. Source: upload.wikimedia.org
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   BLUE BOOKThe F-S'U report involves a radar contact by the radar observer with a simultaneous visual sighting of the object and cannot be...

9. Source: sdhspress.com
   Link: https://www.sdhspress.com/journal/south-dakota-history-12-1/united-states-air-force-efforts-to-investigate-ufos-great-plains-encounters/vol-12-no-1-united-states-air-force-efforts-to-investigate-ufos.pdf
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   42. Case 2089, White Lake, S.Dak., 14 Aug. 1952, ibid.. Roll 15. 43. Case 164, Hecla, S.Dak...Read more...

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Additional References

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