Wouldn't hurt to have a few examples of your arrows, too. Just so he can see that you are serious about doing the job right! I have had two C.O.'s that I will not name that have seen arrowheads I have from various knappers in here. Both say that if they checked me in the woods and I was carrying these, they would pretend they hadn't seen them. BOTH said they'd ticket someone using tourist trap buck apiece rocks (apparently there was a problem with that about 20 years ago with a couple guys and the GF&P Commission pushed thru anti stone legislation).
Whatever you do, be upfront about it. These guys hear every brand of B.S. ever made. And on a daily basis. No sense pegging the needle on their B.S. meter, right?