Photograph of one or two UNIDENTIFED men using #2 Terracer and TD-40 tractor to build a ridge type terrace. The back of the photograph proclaims, “Building ridge type terrace from both sides with TD-40 and #2 Terracer. 13th through. Grader is making another end-out with the blade set nearly flat.”

Photograph of a Yucca plant on hummock in "blow-out" hole of former cotton field. Wind erosion has been successfully controlled by strips of brush. Area was spot-sodded in January 1941 to sandhill blue stem and brush strips were placed in November 1940. OK-8153.

Photograph of an UNIDENTIFED man standing in a completed Fresno terrace. The back of the photograph proclaims, "Building channel type terrace with plow, 5' Fresno and Farm Tractor. Completed Fresno terrace. Note the broad ridge with excellent body and back slope [sic], and the flat channel. The ridge has been well packed by the building operations. Construction data: 4% slope: good soil condition (fine sandy loam); length, 100 ft.; 2 plowings and 4 drag as with Fresno; time, 1 hour, 10 minutes; effective height 16"; channel cross-sectional area 15.8 square feet."

Photograph of one or two UNIDENTIFED men using #2 Terracer and TD-40 tractor to build a ridge type terrace. The back of the photograph proclaims, "Building ridge type terrace from both sides with TD-40 and #2 Terracer. 21st through. Moving the same roll of dirt again to get it to the top of the terrace ridge."

Photograph of three men standing in a completed ridge type terrace constructed with a #2 terracer and TD-40 tractor. The back of the photograph proclaims, "Building ridge type terrace from both sides with TD-40 and #2 Terracer. Completed terrace. Construction data: 3% slope; good soil condition (fine sandy loam); terrace length 360 feet; 12 rounds; time 1 hour, 10 minutes; effective height, 24 inches; channel cross-sectional area 25 square feet."

Photograph of seven UNIDENTIFIED people watching two UNIDENTIFED men on a tractor and plow making the first dump for the construction of a channel type terrace. The back of the photograph proclaims, "Building channel type terrace with plow, 5' Fresno and Farm Tractor. 1st through with drag. Making the first dump. Note that Fresno is loaded and dumped at right angles to the plowed strip and the axis of the terrace."

Photograph of three UNIDENTIFED men standing on a channel type terrace, plowed by a 5' Fresno and farm tractor. The back of the photograph proclaims, "Building channel type terrace with plow, 5' Fresno and Farm Tractor. 2nd round with the Fresno completed. Two drags have been made across each part of the plowed area. Notice the ridge, channel, and the unplowed strip just above the ridge."

Photograph of one or two UNIDENTIFED men using #2 Terracer and TD-40 tractor to build a ridge type terrace. The back of the photograph proclaims, "Building ridge type terrace from both sides with TD-40 and #2 Terracer. 23d through. Moving a final roll of dirt into the side of the ridge. This completes the terrace in 12 rounds."

Photograph of six UNIDENTIFIED people watching two UNIDENTIFED men on a tractor and plow making 1st through with drag for the construction of a channel type terrace. The back of the photograph proclaims, "Building channel type terrace with plow, 5' Fresno and Farm Tractor. 1st through with drag. Lines marking upper and lower limits of ridge have been plowed out, and a strip 8' wide has been plowed, leaving an undisturbed strip 4' wide above the upper edge of the ridge area."

Photograph of eight UNIDENTIFIED people witnessing the construction of a channel type terrace. A UNIDENTIFED man is sitting on the tractor, while another UNIDENTIFED man stands in the middle of the terrace. The back of the photograph proclaims, "Building channel type terrace with plow, 5' Fresno and Farm Tractor. 2nd through with drag. Two trips with the drag are made across each part of the plowed area before it is re-plowed."

Photograph of two UNIDENTIFED men building channel type terrace with plow, 5' Fresno, and farm tractor. Two other UNIDENTIFIED people are standing in the left and left center of the photographs background. The back of the photograph proclaims, "Building channel type terrace with plow, 5' Fresno and Farm Tractor. 4th through with Fresno. The channel has been replowed and two drags have been made across 20" of the terrace, completing that portion."

Photograph of two UNIDENTIFED men using #2 Terracer and TD-40 tractor to build a ridge type terrace. The back of the photograph proclaims, "Building ridge type terrace from both sides with TD-40 and #2 Terracer. 9th through. The blade is set nearly flat again during this round, cutting a fresh slice and throwing it over to the base of the ridge core."

Photograph of three UNIDENTIFED men using #2 Terracer and TD-40 tractor to build a ridge type terrace. The back of the photograph proclaims, "Building ridge type terrace from both sides with TD-40 and #2 Terracer. 17th through. Making another end-cut with the blade flat."

Photograph of three UNIDENTIFED men using #2 Terracer and TD-40 tractor to build a ridge type terrace. The back of the photograph proclaims, "Building ridge type terrace from both sides with TD-40 and #2 Terracer. 7th through. Beginning the 4th round, the dirt is being thrown up to form the core of the ridge."

Photograph of three UNIDENTIFED men using #2 Terracer and TD-40 tractor to build a ridge type terrace. The back of the photograph proclaims, “Building ridge type terrace from both sides with TD-40 and #2 Terracer. 11th through. During this 6th round, the dirt cut on the 5th round is moved up onto the ridge to add body."

Photograph of one or two UNIDENTIFED men using #2 Terracer and TD-40 tractor to build a ridge type terrace. The back of the photograph proclaims, "Building ridge type terrace from both sides with TD-40 and #2 Terracer. 15th through. Pushing up the roll of dirt which was cut and moved over during the 7th round."

Photograph of three UNIDENTIFED men using #2 Terracer and TD-40 tractor to build a ridge type terrace. The back of the photograph proclaims, “Building ridge type terrace from both sides with TD-40 and #2 Terracer. 19th through. Pushing up the dirt cut and moved during the 9th round."

Photograph of an UNIDENTIFED man watching another UNIDENTIFIED man build a channel type terrace with #2 Terracer and TD-40 Tractor. The back of the photograph proclaims, "Building channel type terrace with TD-40 tractor and #2 terracer. 9th through. The roll of dirt from the 7th through has been moved into the ridge on the 8th through. Notice the shape of the ridge at this stage. On this 9th through the blade is backsloping with heel of blade set at previous 12"cutting depth and toe of blade about 5" below ground surface. "10th & 11th Through moves this last roll into the ridge and the terrace is comp[lete]."

Photograph of two UNIDENTIFED men using a 5' Texas Terracer and farm tractor to build a channel type terrace. The back of the photograph proclaims, "Building channel type terrace with 5' Texas terracer and farm tractor. 3d through. Beginning second round with blade set nearly flat, cutting and moving dirt downhill."

Photograph of an UNIDENTIFED man using a 5' Texas Terracer and farm tractor to build a channel type terrace. The back of the photograph proclaims, "Building channel type terrace with 5' Texas terracer and farm tractor. 15th through. Cutting and moving process has been continued until plowed channel line has been reached."

Photograph of two UNIDENTIFED men using #2 Terracer and TD-40 tractor to build a ridge type terrace. The back of the photograph proclaims, "Building ridge type terrace from both sides with TD-40 and #2 Terracer. 2nd through. Completing first round, throwing dirt to plowed center line of ridge."

Photograph of two or three UNIDENTIFED men using #2 Terracer and TD-40 tractor to build a ridge type terrace. The back of the photograph proclaims, "Building ridge type terrace from both sides with TD-40 and #2 Terracer. 5th through. Beginning third round. Note that during the first three rounds the blade is set nearly flat."

Photograph of an UNIDENTIFED man building a channel type terrace with a #2 terracer and TD-40 tractor. A second UNIDENTIFED man stands watching in the background on the far right. The back of the photograph proclaims, "Building channel type terrace with TD-40 tractor and #2 Terracer. 11th through. It required two throughs, the 10th and 11th to move the dirt from the backsloping trip into the ridge. With 12' blade, this can be done in one through, and one less cutting round is required if power is ample. Notice final shape of terrace. Construction data: 3% slope; good soil condition (find [sic] sandy loam); length 330 feet; 5 ½ rounds; time 50 minutes; effective height 1.5'; channel cross-sectional area 18.5 square feet."

Photograph of two UNIDENTIFED men using a 5' Texas Terracer and farm tractor to build a channel type terrace. The back of the photograph proclaims, "Building channel type terrace with 5' Texas terracer and farm tractor. 5th through. Blade tilted slightly, beginning to form the ridge."