Horseshoe gate on the Pedroli Ranch, Paradise Valley, Nevada, July 1978, (35mm slide) by Richard E. Ahlborn, via American Folklife Center of the Library of Congress (both photos).
The ranch house gate was made by Pete Pedroli about 1950. It has a counterweight for self closing. . .
. . . and a latch made from a bridle bit.
There’s another photo of the house and gate here, by Carl Fleishhauer.