Ferdinand (Ferdy) Platt's correspondence relates to two excursions to Egypt, in 1896 and 1907-1908.

• First group: eighteen letters and postcards, sent during Platt's first independent visit to Egypt in early 1896, when he initially travelled with a friend. Dating between 26 January and 19 April, the letters are addressed to Platt's mother and brother Erny. They record meeting Flinders Petrie and other notables.
• Second group: thirty-one letters sent during Platt's second trip to Egypt in 1907-1908, when he accompanied the eighth Duke and Duchess of Devonshire, their relations Lord and Lady Gosford with their daughter Lady Theo, Sir Charles Cradock-Hartopp. Dating between 4 November 1907 and 8 February 1908, they are addressed to Platt's wife, Mabel (May). They record Platt's encounters with Winston Churchill, Alan Gardiner, James Quibell, George Reisner, Archibald Sayce and Arthur Weigall, among others. The letters also mention a meeting with Howard Carter when the latter was still earning a living as an artist, producing paintings for tourists; the letters provide important insights into Carter's life just before he began his partnership with Lord Carnarvon.