My dad gave me a few items today that are pretty special to me and I'd like to preserve them to pass down to future generations. He gave me his 1965 SAAU champion boxing jacket, his Vietnam era Marine Corps dress blues, and my grandfathers WW2 era Army uniform. They have been sitting untouched in my grandmothers closet for the past 55-75 years. Should I leave them as is, or should I have them specially cleaned somewhere?