i get alot of offers to buy a subscription of a quilt magazine..i open them, and sometimes you get a little "gift"..this was in the one i got yesterday.
i got one a few years ago, with the matterss sizes listed on it..laminated. i carry it in my wallet!
cheaper to use muslin on the backs, wether it be bleached,unbleached or tea dyed..
i like to use matching fabrics on the baby and kids quilts though.