# August 15, 1964 — Yosemite NP, CA — Three Silver Spheres

**URL:** <https://uapdiscovery.discourse.group/t/august-15-1964-yosemite-np-ca-three-silver-spheres/293>\
**Category:** Blue Book Unknowns\
**Created:** [August 15, 2025, 1:19am UTC](https://uapdiscovery.discourse.group/t/august-15-1964-yosemite-np-ca-three-silver-spheres/293 "2025-08-15T01:19:56Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![jeffknox](https://avatars.discourse-cdn.com/v4/letter/j/e47c2d/32.png) [@jeffknox](https://uapdiscovery.discourse.group/u/jeffknox)\
**Post date:** [August 15, 2025, 1:19am UTC](https://uapdiscovery.discourse.group/t/august-15-1964-yosemite-np-ca-three-silver-spheres/293/1 "2025-08-15T01:19:56Z")

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![08151964-YosemiteNPCA-Olsen-sec3-p103-Illustration](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/a/ad34991c53ecefc985d00b06e653d52149f90698.png)

August 15, 1964 — Yosemite NP, CA  
8:15 a.m. Edward J. Haug and C. R. Bubb are camping on the southeast side of Benson Lake in Yosemite National Park in California when they hear a sound of rushing air. They look up and see three silver spheres moving in a parallel course from east to west at a fantastic speed, disappearing in 3–4 seconds. [Eberhart]

Record Card:

 ![08151964-YosemiteNPCA-BB-RecordCard](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/b/b0d066e72e1b7115898b13d26ba6cb8a850876d3.jpeg)

Witness Letter:

 ![08151964-YosemiteNPCA-BB-Letter](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/9/989009551253c2a7420aa2dba66e769c83a1aafb.jpeg)

Sources:  
Thomas M. Olsen, The Reference for Outstanding UFO Reports, UFO Information Retrieval Center, November 1966, sec. 3, pp. 102–103;

 ![08151964-YosemiteNPCA-Olsen-sec3-p102](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/5/5dcbf341decd9fb2992ab817fb6bbbafc63894f2.png)

Brad Sparks, Blue Books Unknowns Catalogue, Case 1581, p. 300;

 ![08151964-YosemiteNPCA-Sparks-Case1581-p300](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/6/6268ae7c7c9736166be7893469f64084fbc494d2.png)