Linda, Whenever I make a quilt I make a pillow case from matching fabric for storing my quilt. In additiion to putting my quilt in the pillowcase, I also put in a few scraps from the quilt top in case repairs are needed somewhere along the line. You need to avoid storing your quilts in an attic (extreme heat) or basement (dampness) or in plastic containers (no air circulation) or direct light (fading). Quilts need to breathe. Every few months take your quilts out and air them for a day and refold using different folds that the previous folds so you don't stress the fabrics in your quilt.

About your wedding gown, I would invest in acid free tissue and a bridal gown box and also follow the cautions above...no basement, attic, plastic, etc. Your wedding gown and quilts are family heirlooms and deserve to be carefully preserved. Contact your local bridal shop or do a search online to order through the mail..... Barb