Just by coincidence I ran into two guys who were detecting the same school I was. We began to talk and they mentioned they were in a club... The South Mountain Relic and Coin Club.. They have a web site, it looks decent... Here is the link... http://www.smrcc.com/news.php
If you put your location on your information, either map or put your town, you will get a better response. MD is a fairly spread out state. I am a member and VP or The Shore Seekers Artifact & Recovery Club in Salisbury, MD. I do recommend them.