File No. 812.00/15547.
The Secretary of State to Special Agent Silliman.
Washington, July 27, 1915—6 p.m.
Your July 26, noon. Inform Foreign Office that it was officially reported from Nogales July 24 that Calles camped night July 23 with about 2,000 men at Santa Barbara, eighteen miles east of Nogales, with outposts at Buena Vista, six miles south of Nogales water works. It is stated indications lead to belief that this force will attack Nogales in near future. Bring urgency of matter immediately to attention of Foreign Office, and remind it that owing to character of ground on which Nogales is built any attack would necessarily endanger American lives and property American side. Convey above in connection with telegrams sent you past few days, this subject.