Photograph of the Rio Grande, with the far river bank labeled "Mexico" and the bank from which the photo was taken labeled "U.S.A."

Photograph of a United States Army airplane on the ground in a village in Mexico. Five men stand around the plane. They are in military uniform. A handwritten note on the photograph says, "U. S. Army Airplane arriving at a villiage [sic] in Mexico."

Photograph of a portrait of Major James P. Yancy, commander of the 8th and 5th Cavalry. Yancy is standing with his hands behind his back and is in military uniform. A handwritten note on the back of the photograph says, "Major James P. Yancy, Commanding 8th & 5th Cavalry, Expedition into Mexico, August 19th - 24th, 1919. From Stacy C. Hinkle Files."

Photograph of a hand-drawn map. A note written on the map says, "Sketch showing approximate relative positions of points covered by Patrol of 10 men of Troop A, 5th Cavalry, August 20-22, 1919." The map shows the Texas border with Mexico. On the Texas side is Presidio County, including border towns Candelaria, Ruidosa and San Jose.

Copy photograph of a hand-drawn map. A handwritten note on the map says, "Rio Conchos area of Mexico as of 1919, When Lts. Peterson & Davis, U. S. Flyers flew up wrong river, at #1, and made a forced landing at #2. Near #3, Mexican bandits made them prisoners, takened [sic] to #4, then by trails through the mountains to #5 area where Capt. Matlack rescued both flyers, but only paid half of ransom. Areas near #6, #7 & #8 were involved in the cavalry expedition in Mexico after the flyers' rescue. Map by W. D. Smithers."

Pamphlet advertising real estate and agri-business in an "All American Colony in Mexico" called Atascador. Land was offered at $12.50 - 25 per acre.