I found these items around an old cabin site. Age of square or rectangular head nails? The sheet metal item looks like a homemade item. Simple, but interesting.
1st - I noticed this was your very first post - so, Welcome Aboard Faithalone289! Take a look at Forum: Massachusetts for information (i.e., clubs, etc.) directly related to your state.
2nd - Here are a few informative articles talking about nails...
The National Park Service in its historic structures restoration
program has developed some research techniques...
The History of Nail Making History does not record who it was, but the incredible results of that
inspirational moment are all around us - in the houses we live in,
the bridges we cross, the furniture we sit on...