Your branch of the SCA is the bestest resource.
I used to use archaeologists reports for ideas and draw my own patterns from them. I also used to use Olaf Goubitz book 'Purses in Pieces', 'Shoes and Pattens' by Grew, 'Scabbards' by Cameroon, 'Knives and Scabbards' by Cowgill, and an SCA publication on making shoes
The SCA used to have hundreds of patterns for items on a website. All free to down-load. I've been out of it all for 20 years so I don't know if it still exists. Ask at your local branch