I recall this issue coming up on GCA a year or so ago, and it is worth remembering that (as indicated above) many of the celebrated British sub-70 courses were first opened with bogey scores (where they existed) in the mid-70s: for about the first half of its existence Harlech, for example, had a bogey of 76, with 1,3,7,8,10,12,13,15,and 17 all bogey fives, 2,5,6,16 as bogey fours, and 4, 9, 11,14, and 18 as bogey threes, Only 7 and 8 are nowadays par fives - hence the par of 69. Apart from a handful of back tees, the course is pretty much unchanged. For a good mid-century reference the sorts of 'scratch score' numbers given in A Round of Golf Courses are very interesting, especially for Rye and Worlington, and the card at the Sacred Nine has long persisted in giving both a par figure (35) and a bogey (37) for the nine holes.