The Dick Act of 1902 also known as the Efficiency of Militia Bill H.R. 11654, of June 28, 1902 invalidates all so-called gun-control laws."
No, the Dick Act repealed the Militia Act of 1792, and created the National Guard system. It says nothing about gun control. And it was extensively re-written in a couple of post-WWI Army Acts.
but .. go read the whole thing . .it's not long at all, doesn't need to be it's not a mystery .... or even mysterious ... ;)