I had the pleasure to walk Merion Golf Club's West Course yesterday with Mark Chalfont--his first visit and my umpteenth (thanks Mr. D).
This is a pure 1913 architecture except for one green site (13) that was modified when a snack shack was put in behind the green necessetating some mounding. But the course is full of quirk and the bunkers in the mounds look pretty neat even though there are few bunkers on the course.
You can see where earth was scooped out to build up greens, but very few were sanded.
There is one GREAT rectangular green (12) with no bunkers on the entire hole.
There are low mounds all over the place--not geometric chocolate drops per se but interesting mounds that give separation between holes (3 and 14) and some seemingly random. There are some low profile mounds in front of some greens (1) that affect runups in an interesting fashion. There is one conical mound about 5' high in the left front of 16 that is pretty cool and some greens melding into tees (16G/17T).
This really is a great golf course and a perfect complement to the East. Fun to play, hard to lose a ball, great for fathers and sons, grandfathers, fathers and sons, and other generational combinations. Yet a challenge at just under 6000 yards. As Tom Paul mentions, it must have the shortest Par 3,4,4 combination in all of golf. From the back tees 6(3), 7(4) and 8(4) are 119, 287 and 242 yards! While you can go birdie-birdie-birdie, there are plenty of others to be made.