Woody habitually wrote things and filed them away, perhaps to do something with them later. I mean the man was compulsive about writing.
During my time in NYC I would often stop by to visit Marjorie Guthrie, Woody's 2nd wife, and Arlo's mother. I had the good fortune to be there the day she brought the filing cabinets that Woody had filled with stuff to the office. To my immense pleasure she set me trying to sort things (a task akin to cleaning the Augean Stables). I never saw those particular pieces, but I saw some stuff that has never seen the light of day.

Mark Ross