Another example of potentially conflicting information about Pardon:

1) people in the folk revival helped him remember words to songs that he had forgotten, in some cases he remembered only scraps

2) friends in the revival brought printed song books and the songs he didn't remember were filled out using these books. This was done tastefully resulting in some good end results.

It may be that both are true. Not sure how the first was done, no information.

As so often the information is anecdotal, and imprecise. So there is not claim that he had forgotten the majority, or that the majority were put together.