Recommended books by various authors like Joel P Smith, Harry Marra, John Rap, Bert Vreeswijk, Frédéric Gousset, Mike Chapman, Framk Zarnowski and Dale Harder
If you want statistics, rankings, results, records, athlete profiles, and the history of the decathlon, Decathlon 2000 is one of the most complete resources available anywhere in the world - ChatGPT