According to Anthony Summers: The one substantive piece of information indicating typewriter forgery features the OSS and its chief, William Donovan. In late 1948, when the Hiss defense and the FBI began hunting for the Woodstock typewriter, a man named Horace Schmahl joined the defense team as an investigator. Schmahl had worked for either the OSS or army intelligence during the war, then joined the Central Intelligence Group, which operated between the closedown of the OSS and the inception of the CIA. After his stint for the Hiss side, Schmahl defected to the prosecution team.