I was in Nigeria from Autumn 1968, until summer 1973, mainly in Warri, but with stints in PH and Eket.
After three years in the good old South Africa, I returned to Ikeja

for a year, then off to Dubai where I met you as a nipper.
In the book "Shadows" there is a picture of the S55/3 Whirlwind that I was crew on, when it was ferried from UK to Nigeria in 1968.
It flew briefly for Shell on the Warri/PH/ Bonny route before "bent nose" Baker wrote it off being silly

I'm the guy in the picture with shorts, no shirt and a beard.
If you are trying to contact Mike Draper the author, I would Google the publishers and the editor will have Mikes contact number.
Tony