Tim:
The Cornish & Silva nine is in no way a "restoration" of anything; It was laid out as an entirely new golf course on (and around) the site of the old Mt Pleasant nine which, at the time of its construction, had been gone for at least 40 years. I worked at the Mt. Wash for a number of years and can personally vouch for this. There remain several mysteries about what holes were built where, and by whom, in and around Bretton Woods, but no record (beyond old scorecard yardages) ever existed regarding the Mt. Pleasant nine.
In case you're super curious, those yardages (in the layout's later years, I believe) were:
#1 208 yds Par 4
#2 236 yds Par 4
#3 520 yds Par 5
#4 347 yds Par 4
#5 355 yds Par 4
#6 494 yds Par 5
#7 191 yds Par 3
#8 463 yds Par 5
#9 232 yds Par 4
DW