This quilt was one my sweet mother started before my DD was born 22 1/2 years ago..Bless her heart she never finished it.. Her mother got sick and she had to care for her..When she found out I was starting to quilt she dug it out and mailed it to me.. Well it has rust stains on it.. How should I clean this and get it ready to put together and store it for hopefully grand baby one day! Thank you so much!