I'd say your best bet for info and pictures of handle materials and exotic woods would be knife maker supplier's catalogs. Look in the back of Blade magazine and call or write to as many as you can, even the ones that might cost a couple bucks. Some even have great tips on knifemaking and handle finishing. Take care! Michael
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Always think of your fellow knife makers as partners in the search for the perfect blade, not as people trying to compete with you and your work!