According to the Letters to Venetia Stanley book, there is 1 more letter that day, but its content is not currently in the digital archive.

The first nine Victoria Crosses of the war are gazetted [16], [35]. In the House of Commons, the Prime Minister moves a Vote of Credit for £225,000,000 [36], [35]. Austro-Hungarian forces launch a third invasion of Serbia at the Battle of Kolubara [37], [35]. The Federal Reserve opens for business in the United States [38], [35].
>>Topics: Devon Regiment Motor Cyclists, Seaford Camp, Payments And Allowances Leaflets, Business Of The House, Young Boys His Majestys Ships, Alien Spies
"C. is remaining at Walton Heath today, as he is not feeling well enough to come up to town... The weekend before I spent down there, & we were busy over the City Temple Speech, which was a great success."

"The Pall Mall and Observer have been sold for £100,000—purchase to be completed in January. The purchaser... showed me a letter from Benson, the banker, offering him £150,000 for the property."
Searching 1912–1916 Archive