"Now, at the risk (and I hope it is very slight) of this blowing up in my face, can someone outline the basic hole changes after 1916; when and by whom? I am sure that info is buried somewhere in the "archives", but it GCA.com is now a kinder, friendlier place and I was thinking it would be lovely if someone could top off Joe's post."
Sean:
Depending on what kind of hole by hole detail of changes made to Merion East between 1916 and 1934 one is interested in that would be a pretty big job to do on here.
The entire architectural or design evolution of Merion East was done by Wayne Morrison for the Flynn book. Just the section on the design evolution of Merion East in the Flynn book probably runs over a hundred pages complete with all the drawings and detailed explanations of major and minor changes over the years.
Basically the changes made to the course from 1916 to 1934 were by Hugh Wilson (until he died in 1925) and then carried on by William Flynn with the assistance of Merion's long time and very prominent greenkeeper Joe Valentine. Fortunately Merion has all the architectural drawings done by Flynn throughout that time span.
I have the whole thing on my computer and would be happy to answer any of your questions about specific hole changes and details but I cannot post the historic material on here so that's not going to happen. However if you have some selective questions I would be happy to consider answering some of them for you.
But as a basic sketch of say the greens, there are app seven of them that are pretty much as they were originally with 2-3 more that had some minor modifications of one kind or another. The rest underwent changes in placement and/or design to some larger degree.
And then there is the matter of the evolutionary bunkering of Merion East. I would say that one of the most important confirmations about the evolutionary design of Merion East that came about on GOLFCLUBATLAS by the inclusion of old newspaper reports is the fact that Wilson's trip abroad was not done in preparation for the routing of the course but done more for ideas on sort of the evolutionary "designing up" of the course with the inclusion of bunkering types and patterns that happened after the course was first "laid out"
and grassed in the fall of 1911.