Here are some links to pdf you may find of value...

https://ncptt.nps.gov/blog/historic-amer...-plate-2001-14/

https://ncptt.nps.gov/blog/historic-amer...-plate-2001-15/

https://books.google.com/books/about/Historic_American_Timber_Joinery.html?id=_k-XAAAACAAJ

There are many others, especially if doing searches in other languages, as well as great reference books...