Edwin A. Rigg to James H. Carleton, March 26, 1862

Col. JAMES H. CARLETON, Commanding Southern District:

COLONEL: I have the honor to report a man from up the river has just arrived here, and reports that up the Colorado River near 200 miles he met some Mexicans, who told him that they traveled in company with 1,700 men between Taos and Fort Massachusetts. They told him that they were from. New Mexico, and were going to Tucson; 400 of them were New Mexicans. What dependence can be placed in the rumor I know not, but one thing is certain, if it is true and they were Confederate troops, Colonel Canby must be whipped. If they were Union troops Sibley has been whipped, and they are going through the mountains to fall on Tucson. They had, according to this man’s account, a large train of pack-mules. I will endeavor to get at the facts. Mr. Weaver reports the wagons having been seen near the Negas to be on the Salt Lake road.

Very respectfully, your obedient servant,