The best way to preserve the history of a family heirloom is with a written or oral history. If the treasure bequeathed to you happens to be your grandfather's World War II bomber jacket, and you're fortunate enough to still have him in your life, sit down with him and ask him to talk about his experiences. Ask him how he got the jacket and what happened to him while he was wearing the jacket. Once you get him going, he'll probably remember other details that are significant to the jacket's history. You can also take pictures and write down the story behind the heirloom. Older family members are valuable resources, so get the information while they're still around.