# September 23, 1948 — San Pablo, CA — Strange Object above Bomber

**URL:** <https://uapdiscovery.discourse.group/t/september-23-1948-san-pablo-ca-strange-object-above-bomber/627>\
**Category:** Blue Book Unknowns\
**Created:** [September 23, 2026, 12:23am UTC](https://uapdiscovery.discourse.group/t/september-23-1948-san-pablo-ca-strange-object-above-bomber/627 "2026-09-23T00:23:44Z")\
**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:** [September 23, 2026, 12:23am UTC](https://uapdiscovery.discourse.group/t/september-23-1948-san-pablo-ca-strange-object-above-bomber/627/1 "2026-09-23T00:23:44Z")

</div>

![09231948-SanPabloCA-SIGN-Report-Sketch](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/b/beef3b5c6dc7be56cdc8b98a57036f2849f5c9e9.jpeg)

 ![09231948-SanPabloCA-SIGN-Report-Sketch2](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/2/2eaa2757ba9f9c11f9930c4513a27614010c6029.jpeg)

September 23, 1948 — San Pablo, CA  
12:02 p.m. Retired US Army Col. Horace S. Eakins and Sylvester Bentham, located four miles east of San Pablo, California, see a twin-engine bomber aircraft pass low overhead to the southeast then see far beyond and high above it, possibly 1 mile higher, a strange fast-flying, irregularly shaped, translucent white, “amoeba” headed east. It is the size of a four-engine bomber, with three appendages in front and two trailing with a dark gray spot (possibly spherical) near the center, which remains stable in motion. The arms of the amoeba are undulating as the object wobbles. It disappears suddenly, leaving no trail. [Eberhart]

Letter:

 ![09231948-SanPabloCA-SIGN-EakinsLetter](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/b/bea1548ae4ed054362a1ae1c94ef8f8c0f9e9b94.jpeg)

Summary:

 ![09231948-SanPabloCA-SIGN-Incident176-Summary](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/0/0409917a8c11acf75af55d931001f43c07609b77.jpeg)

Report:

 ![09231948-SanPabloCA-SIGN-Report-p1](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/1/1982adc758efcbe58c809293f1e5087fc84bfafc.jpeg)

 ![09231948-SanPabloCA-SIGN-Report-p2](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/8/819c0ab783ca1f0aee152667702efe18ea5dde4c.jpeg)

Sources:  
Brad Sparks, Blue Books Unknowns Catalogue, Case 116, p. 38;

 ![09231948-SanPabloCA-Sparks-Case116-p38](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/2/2e1b17c78ae7a21b14d911f770edab607f5e9f54.png)

NICAP, “Strange Object above Bomber”;

> **[UFO Report](https://www.nicap.org/480923sanpablo_dir.htm)**

[PURSUE release, pp. 10–13]

 ![09231948-SanPabloCA-SIGN-Incident176-p1](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/d/d2a7eaaf17006dd5c480ea05c91a01feab4256d0.jpeg)

 ![09231948-SanPabloCA-SIGN-Incident176-p2](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/b/b74cd1085fdc289cb842a4c0c4514d0a94725b55.webp)

 ![09231948-SanPabloCA-SIGN-Incident176a-p1](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/d/d02ae1a3a1d796f74e04d91ebf46914cf9a8d466.webp)

 ![09231948-SanPabloCA-SIGN-Incident176a-p2](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/2/25d5b388eafd9d553b53587448f81c836f3540ec.webp)

[https://www.war.gov/medialink/ufo/release\_1/38\_143685\_box7\_incident\_summaries\_173-233.pdf](https://www.war.gov/medialink/ufo/release_1/38_143685_box7_incident_summaries_173-233.pdf)