Documentation is a wonderful thing. It gives us insight into days past and how things were done in that particular instance of according to that individual.
However, the notion that if there is no documentation then something didn't happen is dangerous, or at least has no foundation in reality.
Try to imagine all of the mundane minutiae that is involved in our daily life...
How many squares of toilet tissue do you use when visiting the throne? How do you fold and apply those squares of tissue?
200 years from now will there be discussions on toilet tissue use? Will people demand that since one person documented their personal habit of use that everyone did it the same way?
Will there be statements like... "There is no documentation supporting the notion that people used more than four folded squares at a time. It didn't happen!"
Now that we've all had a grin...
I would guess that backwood folks of that era used what patching material they had available to them... Homespun, animal skins, or other natural available (FREE) materials. And everyone's method of employing those materials varied according to availability, shooting style, and even upbringing or instruction.
Mike