On 4 July 1914, Count Leopold Berchtold, the Austro-Hungarian Minister for Foreign Affairs, sent a strictly confidential telegram to Count Szogyeny, the Austro-Hungarian Ambassador to Germany. In it, he informs the Ambassador that his chef de cabinet, Count Alexander Hoyos, will deliver Emperor Franz Joseph’s message to Kaiser Wilhelm.
Count Berchtold to Count Szogyeny in Berlin. Vienna, 4 July 1914.
Count Hoyos is leaving tonight with an autograph letter of His Imperial and Royal Apostolic Majesty to Emperor William in Berlin. He will bring your Excellency copies of this letter and of an enclosed memoir, which you will forward to the Imperial Chancellor.
Should it be impossible for your Excellency to be received personally by the Kaiser, I must ask you to take every precaution so that the letter is in the Emperor’s hands in the course of tomorrow, since, according to the papers, Emperor William starts on his Northern voyage on Monday.
I am also very anxious that your Excellency should be received by the Imperial chancellor tomorrow, and I shall ask your Excellency to visit Herr von Bethmann Hollweg in the country, if he is not in Berlin. I consider it of the utmost importance that the Imperial chancellor should speak to you and then to the Emperor on these subjects, before the Emperor starts on his voyage.
Source: 1919 Austro-Hungarian Red Book