One of my elderly neighbours told me that during WW2 the people of our nearest city, Perpignan did not have enough food so came to the small villages like ours and ate what was on offer. He said that back then every single person in the village had an allotment. And of course, everyone had a good knowledge of where the right trees were and when to harvest, so there was plenty of food to go around. Not at all the same story now with only seven allotments for our village of 200 people. And three of them are ours! Though I only have time to manage one currently. Am still imagining people are going to join me here soon. One lady I met on Hive is on her way from Belgium now. Once she gets here we can begin to expand ;)

For cob building I actually don't have anything. I became a bit obsessed with Earthships a year ago and must of course widen my knowledge now. Let me have a look...

On pdfdrive.com there are quite a few listed:
https://www.pdfdrive.com/search?q=cob+building&pagecount=&pubyear=&searchin=&em=

There are also a few on archive.org: https://archive.org/details/artofnaturalbuil0000kenn