Part 110, page 331
FBI 164-81, Vault Part 110 p. 331 (DB Cooper-49960), Letter — cooper.theunsolved.net/parts/Cooper-Part-110/pages/331
Transcript
The scan is the source; the transcript is machine-generated from it.
This will probably be the worst tip you will get but I have only seen the picture of the plane hijacker once in your paper so I can't be too sure. He looks like a guy that was around Bellingham for a time & was a self-styled Big Time operator. He seems to me to be just the type to pull a trick like that. I have his name but no address. There is no address in either the phone book or city directory. His name is F. M. Arndt. He was the Vice President of the Northwest Land and Investment Company, 103 East Holly Street, Room 204. The number will be my original rifle number I had years ago.
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DB COOPER-49960