Since 1922, 38 decathlon world records have been set - 8 at the Olympics, with the last in 1984—but score comparisons over time are difficult due to multiple changes in the points tables.
Recommended books by various authors like Joel P Smith, Harry Marra, John Rap, Bert Vreeswijk, Frédéric Gousset, Mike Chapman, Framk Zarnowski and Dale Harder