What all do i need to take to machine shop?

Thanks Everyone... there is so much to think about!

I did do some searching and found a few engine machine shops within 40 miles or so of me. Other than cleaning and inventory listing my stuff, I'll plan to take a drive soon to check out a few of them and talk to the guys. I'd rather share pics with them on the first visit so I don't feel inclined to leave all my stuff at the first place I check out.