Biography at GLBTQ encyclopaediaArchived 15 May 2008 at the Wayback Machine by Keith Hale, editor of Friends and Apostles: The Correspondence of Rupert Brooke-James Strachey, 1905–1914
Richard Halliburton Papers: CorrespondenceArchived 15 April 2005 at the Wayback Machine, Manuscripts Division, Department of Rare Books and Special Collections, Princeton University Library. Accessed online 2 January 2008. Gerry Max, Horizon Chasers, p. 12 et passim. Also Jonathan Root, Halliburton--The Magnificent Myth, p. 70 et passim
Biography at GLBTQ encyclopaediaArchived 15 May 2008 at the Wayback Machine by Keith Hale, editor of Friends and Apostles: The Correspondence of Rupert Brooke-James Strachey, 1905–1914
Richard Halliburton Papers: CorrespondenceArchived 15 April 2005 at the Wayback Machine, Manuscripts Division, Department of Rare Books and Special Collections, Princeton University Library. Accessed online 2 January 2008. Gerry Max, Horizon Chasers, p. 12 et passim. Also Jonathan Root, Halliburton--The Magnificent Myth, p. 70 et passim