I can add some to the thread:
Alley West Virginians at the top, dug at the Pennsboro location.
More dug at Pennsboro
A pretty striking alley abalone in the center of this pic, all from Pennsboro
I joined this site a long time ago, but got sidetracked and never posted. Anyway, many or most of you folks already know me from other places. Glad to be on this forum... another source of marble knowledge and pictures to peruse!