I found these wonderful Expanding File Jackets at Staples.
I got the idea from Marie Louise at How Do You Sort Your Patterns on Stitcher’s Guild. Marie Louise states she puts the pattern pieces, instruction sheets, and traced pattern, notes and pictures into the jacket. She splits the pattern envelope into two pieces and puts the front onto the front and the back onto the back of the jacket. She shows them stored in magazine holders. Wonderful idea and worthy of copying.