Try searching under "Presser Feet".

There are pictures at these 2 sites that might help you identify your feet.
Type A pressure feet
Type B pressure feet

If you ever receive the catalog from "Nancy's Notions" there are pictures and descriptions in there, It's a good idea to cut them out and tape them to the various sewing machine feet.

http://hubben.crosswinds.net/

on the left scroll down to manuals and click
to find attachments, scroll down to the bottom of the page..pick a manual, go to the back of the book.
There are lots of pictures and explanation of how to use attachments.

Here is a link that might be useful: hubben crosswinds

Do you have the machine that belongs to the feet? One of my machines is a Singer and a couple of years ago I found a box of mysterious looking Singer attachments at a yard sale for $2.00. I took them into the local dealer and he explained them all to me. If you have a local dealer for your machine, he might help you.