# July 11/12, 1947 — Elmendorf AFB, AK — Balloon-like Grayish Object,

**URL:** https://uapdiscovery.discourse.group/t/july-11-12-1947-elmendorf-afb-ak-balloon-like-grayish-object/245
**Category:** Blue Book Unknowns
**Created:** [July 12, 2025, 12:22am UTC](https://uapdiscovery.discourse.group/t/july-11-12-1947-elmendorf-afb-ak-balloon-like-grayish-object/245 "2025-07-12T00:22:04Z")
**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: [July 12, 2025, 12:22am UTC](https://uapdiscovery.discourse.group/t/july-11-12-1947-elmendorf-afb-ak-balloon-like-grayish-object/245/1 "2025-07-12T00:22:04Z")

</div>

![07121947-ElmendorfAFBAK-SIGN-Incident42-RecordCard](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/4/47e529811deb1de793d78e9a7711f0c3443356f0.jpeg)

July 11/12, 1947 — Elmendorf AFB, AK  
6:30 p.m. USAAF Maj. Edward Graham and others at Elmendorf AFB [now Joint Base Elmendorf-Richardson], Anchorage, Alaska, see a balloon-like grayish object, 10 feet long, flying northwest at 100 mph at an altitude of 1,500 feet and following the contour of mountains 5 miles away. It is paralleling the course of a landing C-47. [Eberhart]

SIGN Incident 42:

 ![07121947-ElmendorfAFBAK-SIGN-Incident42-IncidentSummarySheet](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/d/d9300cd327b8fc46dd7c0f5d0d31114779c8f58b.png)  
 ![07121947-ElmendorfAFBAK-SIGN-Incident42-Summary](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/d/d1b9dc689cfcdb4fda36a2aa6b5b2e9be28a535e.jpeg)

Source:  
Brad Sparks, Blue Books Unknowns Catalogue, Case 40, p. 24;

 ![07121947-ElmendorfAFBAK-Sparks-Case40-p24](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/4/44d5b7f3e475d97837b580d26f4e6a88c8954106.png)

See previous day sighting:

> [@July 11, 1947 — Elmendorf AFB, Anchorage, Alaska — Round 3ʹ Aluminum Object at Great Speed](https://uapdiscovery.discourse.group/t/july-11-1947-elmendorf-afb-anchorage-alaska-round-3-aluminum-object-at-great-speed/243):
>
> July 11, 1947 — Elmendorf AFB, Anchorage, Alaska 11:00 a.m. USAAF Col. Bruce H. Perry and Maj. William E. Geyser, 59th AACS Group, see a round 2–3 foot or 10-foot aluminum or silver metallic sphere traveling at great speed to the south of Elmendorf AFB [now Joint Base Elmendorf-Richardson], Anchorage, Alaska. Estimated altitude is 3,000–4,000 feet. [Eberhart] Record Card: SIGN Incid…