Anonymous citizen tip letter naming two Rubens & Pratt employees (sub 253)
This copy: Part 103 p. 421Also filed at Part 103 p. 416 (primary)
This copy’s own title
Anonymous citizen tip letter re Rubens & Pratt coworkers (sub 254)
Document date 22 December 1971
Another copy of this document is the primary, most legible copy: Part 103 p. 416.
Copies may differ in what was redacted.
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Id: Cooper-Part-103:421-421
Subject: Cooper Files: Cooper-Part-103:421-421 Document: Anonymous citizen tip letter re Rubens & Pratt coworkers (sub 254) Id: Cooper-Part-103:421-421 Page: https://cooper.theunsolved.net/documents/Cooper-Part-103%3A421-421 What is wrong (title, date, type, which pages belong together, copies)? What does the scan show?
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FBI 164-81, Vault Part 103 p. 421 (DB Cooper-46884), Letter, dated 22 Dec 1971 — cooper.theunsolved.net/documents/Cooper-Part-103%3A421-421
[REDACTED] Seattles, Wash., 98177 Dec. 22, 1971
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The FBI Seattle, Wash.
Dear Sirs:
With reference to the hijack-ransomed plane just before Thanksgiving.
I would like to suggest a remotely possible lead to the people involved in this crime. I do it quite diffidently because the people I suggest are fellow employees at Rubens & Pratt, consulting engineers.
One person, Ray Ingold, 29008 22nd S., Auburn is an electrical engineer who has worked at R&P for less than a year. He bears a certain resemblance to the sketch of the person who hijacked the plane although he may be taller than the description indicates.
The other, Robert R. Irwin, 6702 227 St. S.W., Mountlake Terrace, is a comparatively new employee and is a private pilot and has his own plane.
It is most probable that these people are not involved, but regardless of the outcome of any investigation I do not want my name mentioned at any time in any way.
Yours truly, [REDACTED]
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Sub 254 164-81- 1589[illegible] SERCH..D......... INDEXED SERIALIZED...M...FILED... DEC 20, 1971 FBI - SEATTLE
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DB COOPER-46884
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b6 b7C b7D
Serials: SE 164-81