Carr, Frank G Letters to Pearson regarding research into two houses located near the old Palace of Westminster, known as Whitaker's House and the Old Pells; and concerning Pearson's publication The Portraiture of Oliver Cromwell with special reference to the Wilkinson Head (London: Biometrika Office; 1935). Letters to Maria Sharpe Pearson regarding the gift of the lease of Whitaker's House, presented to the Library of the House of Lords. 1935-1936