“In order to accomplish better results in connection with D-Case 343, and to shorten the stay of the informing agent at the place of meeting, it has been decided to discontinue the former practice of dining with this agent prior to receiving his report. It will also be a rule to refrain from working on other matters until the informant in this case has been fully heard, and all data taken down in shorthand.” The book revealed that in D-Case 343 Koenig’s alias was Woehler, and his agent’s name Schleindl. In his notes on operatives Koenig had written that “Friedrich Schleindl ... who was first known as Operative #51, and later as Agent C. O., beginning with October 21st will be called Agent B. I.” This enabled us to interpret a further regulation of the division, to this effect. “Agent B. I. has been requested not to call again at the Central Office, this ruling to take effect immediately. Other arrangements will be made to meet him elsewhere. Whether or not the stenographer of the Central Office will continue to write reports covering D-Case 343 will be determined later.” Rule 4 read: “Supplementing Rule 2, it has been decided that I refrain from drinking beer or liquor with my supper prior to receiving Agent B. I., for the reason that I wish to be perfectly fresh and well prepared to receive his reports.” And Rule 3 contained this passage: “... great care is to be taken that operatives and agents of the Secret Service Division remain entirely unknown to members of the Central Office and other divisions. These regulations do not apply to D-Case 343, which has been handled since the beginning of July (1915) with the knowledge of employees not belonging to the Secret Service Division. Until more favorable arrangements can be made this practice may be continued.” Here clearly was an unusually important case. The notes indicated that Koenig was receiving frequent reports of great value from this Schleindl, had been receiving them for at least five months, was reporting them to von Papen, and intended to safeguard his obtaining further information. When a German voluntarily forswears his beer, something serious is on foot. Lieut. Barnitz, with Detectives Walsh and Fenelly, arrested Schleindl the same day we closed in on Koenig. In his pocket was a cablegram referring to Russian munitions. He was a German reservist, born in Bavaria. At the outbreak of war he was a clerk in the National City Bank of New York, and lived away up in the Bronx, and in the first reaction to war he reported at the German Consulate for duty. Months passed, and he had not been called upon, when one night he met a German who told him to report at the Hotel Manhattan to meet another German named Wagoner. “You’ll find him in the bar,” added his informant.