Peter Delius a rejoint le département d'histoire de l’université de Witwatersrand.
Il a publié de nombreux livres d'histoire soit seul, soit en collaboration
"The Land Belongs to Us"
"The Conversion"
"Putting a Plough to the Ground 1850-1930"
"History from South Africa, Apartheid's Genesis 1939-1961"
"A Lion Amongst the Cattle"
"Democracy X: Marking the Present: Re-presenting the Past"
"Mpumalanga: History and Heritage"
"Mpumalanga: An Illustrated History"