This means I have A LOT of Brother feet, and over the years they have been mixed up and their original purpose lost or forgotten.
I spent an evening sorting the feet, and cross referencing with the manuals and with this very helpful site, Sew4Home. Although they refer to Janome feet, they look the same to me, and there is a lot of information about the feet here, here and here - with large detailed photos too.
So I started with a pile of feet looking something like this (this pic 'borrowed' from the Sew4Home site)
And now I have two compartmented boxes with all feet (bar one) identified by name and, where applicable, letter which will hopefully mean I get more adventurous rather than just using the standard foot for virtually everything.
Oh, and top left - any ideas? It's impressed with the letter J, but is nothing like the J beneath it!
Another useful blog post is here