Well, in the back of many 1970 issues there is a small blip on photo details, he shot with Nikon F2 43-86mm lens (specifically mentioned lol) and tiffen filters.
As the Nikon One Thousand and One Nights article about this lens, around 60mm focal length works very well. I use mine for bikini work LOL, see one shot at
http://four-silver-atoms.com/2012/10...0-bikini-post/