Jack,
Here is one particular link: http://www.woodmagazine.com/materials-guide/lumber/wood-species-1/camphorwood/
I found many sources that refer to camphor wood ability to deter moths & stop silver tarnish ; try do a google search on "camphor wood silver tarnish" . At one time, the oil was harvested for medicinal purposes.
The problem is that the wood, cinnamomom camphora i believe, is not readily available in the United States, unlike its more common relative camphor burl which has a striking in appearance and is quite expensive. My plan is to make a Philadelphia spice chest with the small drawers using actual camphor wood and the fronts to be cahphor burl. It is native to the Far East, but has spread to Australia where it is a nuisacne tree; apparently it drops a chemical that acts a a defoliant and kills compoetying plant life.
I was unable to locate any in the U.S., but Through contacts in Australia, I was able to find a sawmill that was willing to saw and dry a substantial supply of the wood and ship it to me. Getting the wood here is not for the faint of heart; fumigation, customs, brokers, etc..
Karl