Hello Janeen, and thanks for being in touch!
In most cases, these are patterns that were indeed used for sewing - but they are still mostly complete. Pattern pieces were used, and then carefully archived.
The envelopes vary in condition. Some are "vintage very good," and some are pretty beat-up. I'll post more details soon, I promise!
Again, please let me know if there's anything in particular that you're looking for. This collection has bridal, lingerie, children's, costumes, couture... You name it!