Yes, I totally agree. We are very fortunate to be able to order these research letters, all due to Jim's tireless work.
Thankfully, we also have great people like Jim, Drew, Tom, David and a host of others who are willing to share their vast knowledge here. As soon as you think you know something about these great guns and their history, someone will introduce something you had never heard of! It does keep it interesting and fun.
The only way that sharing of knowledge can freely happen, is to create the right environment, and its apparent that the moderators here have worked very hard to ensure that integrity (I know Drew is on top of it!).