Thanks to Arcano from Urbanfreak for you post.

Man tending to twenty-two inch pumps at the General Alvaro Obregon Ranch, Cajeme, Mexico, [s.d.]

Photograph of man tending to twenty-two inch pumps at the General Alvaro Obregon Ranch, Cajeme, Mexico, [s.d.]. A large array of metal piping fills the center of the image, connecting to an aparatus comprised of five wheel-shaped sections. A man in a cowboy hat stands to the right. Behind him, the framework of a building can be seen.

“General Alvaro Obregon Ranch Scenes”, Cajeme, Mexico, [s.d.]

Photograph of “General Alvaro Obregon Ranch Scenes”, Cajeme, Mexico, [s.d.]. A fence with short, thick wooden posts stands across the foreground with a small group of trees beyond it on the far right. A two-story building can be seen through the trees on the far right while a small, fenced plot stands at center. More structures stand throughout the ranch in the background including what appears to be a clock tower on the right. Electrical poles stand dispersed in the dirt roads of the ranch while rolling mountains paint the backdrop in the distance.

View of 2-180 H.P. Fairbanks Morse diesel engines at the General Alvaro Obregon Ranch, Cajeme, Mexico, [s.d.]

Photograph of a view of 2-180 H.P. Fairbanks Morse diesel engines at the General Alvaro Obregon Ranch, Cajeme, Mexico, [s.d.]. The interior of a room with corrugated walls is shown, pistons visible at left and primarily to the right, each addressed by a metal ladder that leads to their elevated platform. Windows can be seen in the background.

Power plant at the General Alvaro Obregon Ranch, Cajeme, Mexico, [s.d.]

Photograph of the power plant at the General Alvaro Obregon Ranch, Cajeme, Mexico, [s.d.]. Just to the right of center, a shack with corrugated walls can be seen, wires running from its right side. To the left, a cart stands in front of two large vats.

Four photographers at the Ferrocarriles Nacionales de Mexico (National Railways of Mexico), Cajeme, Mexico, ca.1910

Photograph of four photographers at the Ferrocarriles Nacionales de Mexico (National Railways of Mexico), Cajeme, Mexico, ca.1910. Four men in suits and hats stand behind their large tripods to operate their cameras. They face towards the foreground while the railroad station stands beyond a large arch behind them. A crowd of finely-dressed people crowd the arched entrance to the platforms. Photo sleeve reads “General Alvaro Oregon Ranch Scenes”.

Main Reference: digitallibrary.usc.edu

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