Philip:
When do you think Tillinghast first did some alpinisation (logically just a synonym for "Mid Surrey mounding") in America, or when do you think he said he did? It appears J.H. Taylor thinks he invented the architectural feature or concept in England at Mid-Surrey in 1911, when Mid Surrey's green keeper, Peter Lees, helped him build them there, apparently in the winter of 1911. Wasn't Tillinghast's Shawnee built earlier than that--around 1908? Do you think it had alpinisation then, and does it appear the feature was done in Virginia earlier than that? Or was alpinization added to Shawnee at some time later? Is it not also true that Peter Lees was first recruited to America (By Macdonald) to oversee the construction and grow-in at The Lido around 1914-1915?
There certainly was some "alpinisation" around the back of the 3rd green at Pine Valley early on. That may've been as early as 1913. According to a later architectural review of PVGC by Hugh Alison it appears there may have been some more of that feature on other areas of PVGC such as in front of the first green (Alison recommended its removal in 1921 as he felt the proportions were wrong and unnatural for architecture). Merion East had some of this feature around the 9th green early on (maybe around 1912-1913) but it appears to have been rather quickly removed in place of sand bunkers.
A very interesting explanation of the invention or original creation of "Mid Surrey mounding" is contained in TommyN's "In My Opinion" article ("In Praise of the Ralph Miller Library") as an excerpt from a book by J.H. Taylor. Taylor explains that the concept of this type of mounding serves the purpose of a more progressive or scientific penalty in golf vs the original penal cross bunkers, followed by flanking bunkers, followed by pots and such scattered within fairways. Taylor explains these various bunker concepts were cycling through architecture in a sort of "in vogue" fashion and obviously Taylor felt this type of mounding ("Mid Surrey mounding" or "Alpinisation" or "Himalayas") was a more scientific architectural feature in the sense of a more progressive penalty.
Also, Philip, what type of relationship or friendship do you suppose Tillinghast had with C.B. Macdonald at any point in their careers?
Some of the relationships of some of these early architects who obviously knew each other seem pretty interesting. For instance, we're trying to figure out what Hugh Wilson's relationship ever was with Crump. It doesn't seem close for some reason. Alan became a member of PVGC (along with seemingly every other well known architect from the area) but apparently Hugh did not. However, following Crump's death, both Hugh and Alan were brought into PVGC to help the club out. Hugh actually became PV's Green Chairman (is it possible to have been PV's Green Chairman without being a member of the club?). However, a few years later Hugh Wilson appears to have severed all ties to the club.
Not just that but we have a letter from Hugh Wilson to R.A. Oakley dated Feb. 6, 1918 (less than ten days after Crump's death) stating that Crump died suddenly 'from an abscess to the brain'. A pretty odd statement if those amongst Crump's friends actually knew he shot himself.