Tried searching for this but came up a blank(?) Apologies to the elves if I've missed it. Seven pages of backstory here:

Woody Guthrie Lost Bonneville Power Recordings Preservation
[member: Vinyl Archaeologist, Jul 20, 2017]

Woody Guthrie Bonneville Power Administration (BPA) recordings
Summary:
Woody Guthrie songs, performed by Guthrie with guitar and harmonica. Twenty-six new songs were written by Guthrie on a one-month contract for the Bonneville Power Administration (BPA) in May 1941, and were recorded during 1941 or later in Portland, Oregon. These are likely the originals or near copies of the 1941 studio recordings Guthrie made at the BPA Headquarters in Portland, Oregon. Some are first-generation discs, others are second-generation or other copies; songs include alternate takes and outtakes. Three of Guthrie's songs were included in the 1948 film "The Columbia."

Contents:
AFC 2018/003 SR01 Side A "Ballad of the Grand Coulee Dam" [Grand Coulee Dam] (2456813-2-1); Side B "Roll on Columbia, Roll on" [Roll On Columbia] (2456813-2-2)
AFC 2018/003 SR02 Side A "Columbia Talking Blues" [Talkin' Columbia] (2456814-2-1); Side B "Song of the Grand Coulee Dam" (2456814-2-2)
AFC 2018/003 SR03 Side A "Jackhammer Blues" (2456815-2-1); Side B blank
AFC 2018/003 SR04 Side A "Pastures of Plenty" (2456816-2-1); Side B "Roll Columbia, Won't You Roll" [Roll Columbia, Roll] (2456816-2-2)
AFC 2018/003 SR05 Side A "Columbia Talking Blues" [Talking Columbia] (2456817-2-1); Side B "Good morning Mr. Captain" [Columbia's Waters] (2456817-2-2)
AFC 2018/003 SR06 Side A "Jackhammer Blues" (2456818-2-1); Side B "Way Up In That Northwest" [Song of the Grand Coulee Dam] (2456818-2-2)
AFC 2018/003 SR07 Side A "Pastures of Plenty" (2456819-2-1); Side B "Grand Coulee Dam" [outtake] (2456819-2-2)
AFC 2018/003 SR08 Side A "Roll, Columbia, Won't You Roll" [Roll Columbia, Roll] (2456820-2-1); Side B "Roll On, Columbia, Roll On" [Roll On, Columbia] (2456820-2-2)
AFC 2018/003 SR09 Side A "Grand Coulee Dam" (2456821-2-1) 80 RPM; Side B 1. "The World Has Several Wonders" [Grand Coulee Dam outtake] (2456821-2-2) 80 RPM; 2. unknown narration #1 (2456821-2-2) 33.33 RPM; 3. unknown narration #2 (2456821-2-2) 33.33 RPM; 4. unknown narration #3 (2456821-2-2) 33.33 RPM; [Each narration cut is a different voice, none of them Woody Guthrie, all reading from the same script. Possibly related to the film for which the Guthrie songs were written - engineer's notes]
AFC 2018/003 SR10 Side A "The Biggest Thing Man Has Ever Done" (2456822-2-1); Side B "Roll On Columbia (2456822-2-2)
AFC 2018/003 SR11 Side A "Pastures of Plenty" (2456823-2-1); Side B "Roll Columbia, Roll" (2456823-2-2).