If it got chilly at night or in September on the trail, woolen clothing came in handy. It would have been too heavy to wear during the heat of the day.
It was a long process to get from the sheep to the shirt.
I found some really good pictures. They are from Wikipedia Commons except for one which is from USDA and I will label it.
First are the two maps.
I’ll start at the beginning of the process.
Next are two pictures of wool.
This is a picture of spinning wool into yarn.
Two pictures of colorful wool yarn.
A picture of a wool sweater.
The last picture is of a ball of wool yarn with a cat attachment by, Loliloli.