Photograph of a contour furrowed pasture on the Miles Robbins farm. The back of the photograph proclaims, "50 acre pasture contour furrowed."

Photograph of newly constructed contour furrows in pasture alternately 7 and 21 feet.

Photograph of the J. M. Anthis farm, which shows, "Cotton, oats and corn planted on the contour in strips in a gently sloping field without the use of level terraces."

Photograph of a strip of Sudan grass on the contour with intervening strips of cultivated cotton on either side. The back of the photograph proclaims, "A strip of Sudan grass on the contour with intervening strips of cultivated cotton on either side. In the Muskogee area, the field men are running a number of demonstrations such as this without the use of terraces."

Photograph of the aftermath of a six-inch rain, which broke the Elk City Reservoir Dam. Notice the concrete debris in the foreground. The back of the photograph proclaims, “View of broken dam from downstream side. A six inch rain in one night caused the dam to overtop its entire length and finally break. Notice the huge pieces of concrete from the core wall and facing that were carried down by the water. A large bridge washed through this break. This dam and reservoir, which cost $350,000, silted in 48% in nine years and was soon to be abandoned because its storage capacity was reduced too much for it to be relied upon for city water supply.”

Photograph of effects of water concentration through drainage which should have been left in natural sod. Picture taken after a 6 inch rain in one night. This picture shows how the water washed out all the soil loosened by the plow. The plow marks are quite visible. OK-5141.

Photograph of the Paul Peeler farm. A spreader ditch with masonry spreaders torn out by flood waters. The picture was taken after a 6-inch rain-fall in one night. Note the gullying in the spreader and how the water cut the banks of the ditch. OK-5142.

Photograph of three UNIDENTIFED farm tenants cultivating a field of cotton planted on the contour. The back of the photograph proclaims, "This picture shows tenants on this particular farm cultivating a whole field of cotton that is planted on the contour."

Photograph of "Deep scouring in lister ridges running up and down the slope. Taken after a heavy rain. Notice the silting at the base of the slope. This soil was washed from the furrows immediately above."

Photograph of oats and cotton drilled on contour and terraces on the Frank DeVorak farm. The back of the photograph proclaims, "Oats drilled on contour in a strip and on the terraces and between two strips of cotton, which is also planted on the contour."

Photograph of newly constructed contour furrows. Furrows on left are spaced 7 feet apart; those on right are spaced alternately 42 inches and 17.5 feet apart.

Photograph of a field on the Christine Taylor farm stripped cropped on the contours with Sudan grass for hay and cotton. A house is in the background. The back of the photograph proclaims, "A field stripped cropped on the contour with Sudan grass for hay and cotton."