Those are some great finds! I've only ever found 2 LCs here in Wisconsin-one in a shallow ditch behind an old church in an area that used to be an animal pen back in the day. Just barely got a sketchy peep with the big coil on the CTX at max sensitivity. It was nearly 24" down! The other I found about 6" off the pavement on a roadway at an old cemetery. It was barely covered with dirt. I've also picked up a couple of those CW tokens around Wisconsin too. So there is stuff to be found here, just got to keep at it, and sometimes get lucky, or follow your hunches.