May 12 1941 From: Honolulu
To: Tokyo
"Warships observed at anchor on the 11th in Pearl Harbor were as follows: " See doc.
May 16 1941 From: Tokyo
To: Singapore
"According to a telegram from our consul in Colombo, a New York Reuters dispatch states that it is reported that the United States has already stationed a fleet in the Indian Ocean. Please pay great attention to the movements of American warships." See doc.
May 26 1941. From: Honolulu
To: Tokyo.
"Warships anchored in Pearl Harbor on the 24th (2) and the 25th (?) were as follows:" See doc.