Books on Biafra
I think the book that you are thinking of is, if I recollect corrrectly, "Roll Back The Skies" by Verdun Polley who sadly passed away just a few years ago. I have a copy of it somewhere. He helped me with "Shadows" and sent over photocopy extracts of his impressive log-book.
Vern was also involved in ferrying Pakistan brand-new L-1049s from Burbank to Pakistan in the 1950s and was later involved in a Pakistan gun-running operation to the Yemen, flying L-1049Hs. Great guy and sadly missed.