I came upon this box of matches, it's probably from a little before 1900 and has significance for my family history, and I would like to add it to my "box o' historical items" but I'm concerned about flammability. I know that old negatives can combust spontaneously, is there a similar danger with matches? Can the matches be chemically changed (by dipping the tips in something, for example) that will make them inert?
This is a strange question as it straddles the line between history and chemistry. I've also asked this question on history.stackoverflow.com.