Tom,
Yes, Mackenzie compares the 5th with the Road Hole at TOC. Others include:
The 8th green was inspired by the 17th at Muirfield.
MacKenzie also compares the 6th with the original redan at North Berwick.
The 4th was inspired by the 11th (Eden) hole at TOC.
The 17th green was constructed with the 14th green at TOC in mind.
The 16th is similar to the 7th at Stoke Poges, England.
The 14th was inspired by the 6th hole at TOC.
The 13th was inspired by "the ideal hole" as depicted in C.B. MacDonald's book.??
The 10th hole embodies the best features of the 4th hole at Alwoodly.