# April 5, 1952 — Phoenix, AZ — Large, Dull-Gray, Circular Object

**URL:** <https://uapdiscovery.discourse.group/t/april-5-1952-phoenix-az-large-dull-gray-circular-object/543>\
**Category:** Blue Book Unknowns\
**Created:** [April 5, 2026, 1:27am UTC](https://uapdiscovery.discourse.group/t/april-5-1952-phoenix-az-large-dull-gray-circular-object/543 "2026-04-05T01:27:09Z")\
**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:** [April 5, 2026, 1:27am UTC](https://uapdiscovery.discourse.group/t/april-5-1952-phoenix-az-large-dull-gray-circular-object/543/1 "2026-04-05T01:27:10Z")

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![04051952-PhoenixAZ-BBSR7-Table](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/f/f46560a73bce48a142efe3dab783401a7ce45cd9.png)

April 5, 1952 — Phoenix, AZ  
10:40 a.m. Four civilians—Mr. and Mrs. L. G. Ryan, R. L. Stokes, and D. Schook—see a large, dull-gray, circular object, followed by two similar ones, flying straight and level at high speed over Phoenix, Arizona. [Eberhart]

Record Card:

 ![04051952-PhoenixAZ-BB-RecordCard](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/1/1efd35c7b5012a893b4df6db722d85a8e36bde22.jpeg)

AF-112/Air Intel Report:

 ![04051952-PhoenixAZ-BB-AF112-p1](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/4/467f0ad4f08115c73cecc888bc2ae0b80f4f4d2b.jpeg)

 ![04051952-PhoenixAZ-BB-AF112-p2](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/6/6618ace60ee95a5f716b61ece36956770e915721.jpeg)

Sources:  
Brad Sparks, Blue Books Unknowns Catalogue, Case 529, p. 124;

 ![04051952-PhoenixAZ-Sparks-Case529-p124](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/c/c0ec8e7d6f69176ae39793ff8e9b02d772dde5a3.png)

Robert Powell, UFOs: A Scientist Explains What We Know (And Don’t Know), 2024, p. 40;

 ![04051952-PhoenixAZ-PowellScientist-p40](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/3/3ce1001feba95a041816102b70d5a2d1986af222.png)

> **[Amazon.com: UFOs: A Scientist Explains What We Know (And Don’t Know):...](https://www.amazon.com/UFOs-Scientist-Explains-What-Know/dp/1538173581)**
>
> Amazon.com: UFOs: A Scientist Explains What We Know (And Don’t Know): 9781538173589: Powell, Robert: Books