Two more interesting books to add to your reading list:-

1) Magic, Madness & Ultramarathon Running. Lessons from the last decade
by Andy Mouncey ISBN978-1-908691-26-2 Filament Publishing, Paperback £9.99

Website http://bigandscaryrunning.com/#/shop/4567094383

2) British Marathon Running Legends Of The 1980's.
by Gabrielle Collison ISBN 978-0-9572186-0-4 Lightning Source UK Ltd. Paperback £11.99

Website http://www.gabriellecollison.com/boo...-of-the-1980s/