I do recommend learning how to test buttons correctly without harming them. A hot point test may leave a small mark on the back but generally only on celluloid buttons which have a very low melt point. As with every testing method, some harm could come to the button and care must be taken. Many of us believe the crazy household chemical tests will also eventually harm the buttons even if it isn't readily evident, so there are valid points for discussion on each side of the testing debate. I have located the National Button Society membership booklet which they send to members every year, another good reason to join the NBS if you have an interest in buttons and learning more. There is no state button society in Maine but there are several district clubs. The towns these clubs are located are as follow: Strong, Bridgton, Warren, Waterville and Sanford. Let me know which one you are closest to and I'll e-mail you the name and address of the local club contact person. Most clubs welcome visitors for a few meetings, then they prefer that you join the club. Club dues are generally very low, perhaps $10 or less per year. I believe the folks in Maine take part in the annual NRBA Show, this is a show combining many of the northeastern button societies and is a very well attended annual button show. It is usually held in one of the NE states for easy access to most members from surrouning states. -Carol C-