Eric -
No one really knows if the 2nd hole is patterned after the 10th at Merion. The current green is not Flynn's original. It was moved by a past green chairman. The desire must have been to lengthen the hole. Flynn originally had a bunker short left of the green and well short and right of the green. The current bunker configuration (as seen in the above photos) was a reconstruction of what was there (at the green) and a relocation of the left fairway bunkers creating better strategy off the tee.
David -
The 16th hole is also not an original Flynn hole. Flynn had a green situated to the right of the current green. In Wayne's photos you can see a flat area right and beyond the fairway (the grass is browing out) where Flynn's green was situated. There were a number of pot bunkers cut into the slope leading to the green. The bunker configuration you see know is an attempt to create a "Flynn-like" hole without making wholesale changes to what was there. The previous bunkers were smaller and not as deep. The hole you see know is patterned after the 1st at Philly C.C. and the 12th at Pine Valley.
Keep in mind, Flynn had a 26 year relationship with Lancaster C.C. He was making changes not long after the course opened. Even knowing the course as Ron and I do, it is difficult to follow all the changes.
The 3rd hole was constructed in the early 40's yet never had the fairway bunkers constructed as Flynn planned. The hole was overcrowded with trees and had become a bit of a "nothing" hole. We took Flynn's plan and implemented the fairway bunker concept he envisioned with the exception of one other left fairway bunker.
Holes 1, 7, 8, 9, 10, 11, 12, 14, 15 and 18 are orginal. 3-6 were added by Flynn in the 40's. Hole #17 was added. See above regarding holes 3 and 16. The current 13th plays to a green that at one time played as a par 3 out the Northeast corner of the property.