The first participation of Portugal in the Olympic Games was at the 5th edition of the Games in 1912, held in Stockholm (Sweden). Only 6 athletes competing in three events (athletics, fencing and Greco-Roman wrestling) represented Portugal in its Olympic debute. One of them, Francisco Lázaro died tragically from heat exhaustion while running the marathon, the first athlete to die during an Olympic event.

This work is a valuable contribution to understand the first Portuguese participation in the Olympics, with important documents, describing with detail all the events that took place in Portugal and in Stockholm, before and during the V Olympiad.