Library.

“Fanny Blankers-Koen of the Netherlands won four gold medals at the 1948 Summer Olympics in the women's 100 metres, women's 200 metres, women's 80 metres hurdles, and women's 4 × 100 metres relay.”

The historical record consistently shows that Fanny Blankers-Koen won four gold medals at the 1948 London Olympics. Reputable sources agree on the same events: the women's 100 metres, 200 metres, 80 metres hurdles, and 4 × 100 metres relay. The wording matches the events contested at the time.

“Bob Mathias of the United States won the gold medal in the men's decathlon at the 1948 Summer Olympics at age 17.”

Authoritative Olympic, athletics, and reference sources consistently confirm that Bob Mathias of the United States won the men's decathlon gold medal at the 1948 Summer Olympics. His birth date was November 17, 1930, so he was 17 years old during the August 1948 competition. The age objection depends on nonstandard wording, not a factual error.

“The United States won 38 gold medals, 27 silver medals, and 19 bronze medals (84 total medals) at the 1948 Summer Olympics.”

The historical record supports this medal count. Authoritative Olympic reference sources and multiple independent medal tables consistently list the United States with 38 gold, 27 silver, and 19 bronze medals at the 1948 Summer Olympics, totaling 84. A stray secondary-source discrepancy exists, but it does not override the official-aligned consensus.

“The 1948 Summer Olympics were hosted by London, United Kingdom.”

Historical records consistently identify the 1948 Summer Olympics as the London Games, hosted in London, United Kingdom. Multiple high-authority sources agree on the host designation without qualification. Informal references to "England" do not change the official location or create a real contradiction.

“Delfo Cabrera of Great Britain won the gold medal in the men's marathon at the 1948 Summer Olympics in London.”

The claim is not supported by the evidence because it assigns the wrong country to Delfo Cabrera. Reliable Olympic records show Cabrera won the 1948 men’s marathon gold medal for Argentina, while Great Britain’s Tom Richards finished second and won silver. The gold-medal portion is correct, but the nationality error changes the central fact.