# September 3, 1947 — Lake Oswego, OR — 12-15 Silver Discs

**URL:** https://uapdiscovery.discourse.group/t/september-3-1947-lake-oswego-or-12-15-silver-discs/613
**Category:** Blue Book Unknowns
**Created:** [September 2, 2026, 11:50pm UTC](https://uapdiscovery.discourse.group/t/september-3-1947-lake-oswego-or-12-15-silver-discs/613 "2026-09-02T23:50:59Z")
**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 2, 2026, 11:50pm UTC](https://uapdiscovery.discourse.group/t/september-3-1947-lake-oswego-or-12-15-silver-discs/613/1 "2026-09-02T23:50:59Z")

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September 3, 1947 — Lake Oswego, OR  
12:15 p.m. Mrs. Raymond Dupuis and two children see 12–15 silver discs maneuvering at a high altitude above Lake Oswego, Oregon. [Eberhart]

Sources:  
Brad Sparks, Blue Books Unknowns Catalogue, Case 56, p. 27;

 ![09031947-LakeOswegoOR-Sparks-Case56-p27](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/5/5c6be210abc74b534ac0a2488f6a657ff53dcb36.png)

[PURSUE release, p. 112;]

 ![09031947-LakeOswegoOR-SIGN-Incident51-p1](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/7/72e3963c89d55f71b96b25fe644fde84aaf2f416.webp)

[https://www.war.gov/medialink/ufo/release\_1/38\_143685\_box7\_incident\_summaries\_1-100.pdf](https://www.war.gov/medialink/ufo/release_1/38_143685_box7_incident_summaries_1-100.pdf)

[PURSUE release, pp. 92–94;]

 ![09031947-LakeOswegoOR-FBI_Teletype](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/f/f07e2f10394fad3dd0ab9e9d7af5917ef7386b41.webp)

 ![09031947-LakeOswegoOR-FBI_Memo_1947_09_13](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/e/edc53ef5d213c657ec4c3804144a7d0d6cc1fdb1.webp)

[https://www.war.gov/medialink/ufo/release\_1/65\_hs1-834228961\_62-hq-83894\_section\_2.pdf](https://www.war.gov/medialink/ufo/release_1/65_hs1-834228961_62-hq-83894_section_2.pdf)

[PURSUE release, pp. 151;]

 ![09031947-LakeOswegoOR-SIGN-Incident51-ALT-p1](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/0/0c76f9dd9fe7348ce673252c30f31028a4cf29e8.webp)

[https://www.war.gov/medialink/ufo/061226/release\_03/documents/DOW-UAP-D087\_US-AirForce\_Analysis-of-Flying-Objects-in-the-US\_1-100.pdf](https://www.war.gov/medialink/ufo/061226/release_03/documents/DOW-UAP-D087_US-AirForce_Analysis-of-Flying-Objects-in-the-US_1-100.pdf)