Photograph of terrace maintennance. Showing terrace harrowed [i.e., as using a harrow plow] to simulate appearance after plowed out channel has been settled by rain. Notice the changed slope of the channel as indicated by the ropes. The cross-sectional area of the channel has been increased by 3.9 square feet. OK-8117-B.

Photograph of three UNIDENTIFIED men standing in a channel-type terrace built on 3% slope with TD-40 tractor and #2 Terracer, after the channel has been plowed out. The back of the photograph proclaims, "Terrace Maintenance. Showing channel-type terrace built on 3% slope with TD-40 tractor and #2 Terracer, after the channel has been plowed out. Note that plow used was a pasture furrowing type and left the soil in a very ridged condition. A turning plow would be much better for this purpose."

Photograph of three UNIDENTIFIED men undertaking both surveying and terrace maintenance. The back of the photograph proclaims, "Terrace maintenance. Showing terrace harrowed to simulate appearance after plowed-out channel has been settled by rain. Notice the changed slope of the channel as indicated by the ropes. The cross-sectional area of the channel has been increased 3.9 square feet."

Photograph of seven UNIDENTIFED people watching a eighth 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. 5th through. The roll of dirt from the 3d through was moved into the ridge on the 4th through. In this 5th through the blade is set flat, cutting another 24" slice to same depth and moving dirt as far downhill as power will permit."

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 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 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 two UNIDENTIFED people building channel type terrace with 5' Texas Terracer and farm tractor. Another two UNIDEFIED people are surveying the land with rope. The back of the photograph proclaims, "Building channel type terrace with 5' Texas Terracer and farm tractor. 21st through. Continuing the cutting and moving process. Not increasing depth of channel and height of ridge."

Photograph of nine UNIDENTIFED people watching a tenth 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. 3d through. First through was made 6 ft. below staked channel line, cutting 12" deep with blade as flat as power would permit. On the second trip, the roll of dirt was moved as far downhill as possible to form the toe of the ridge. In this 3d through, blade is cutting slice 24" wide to same depth as previous cut and is set nearly flat."

Photograph of three UNIDENTIFED people watching a fourth 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. 7th through. The roll of dirt from the 5th through has been moved into the ridge on the 6th through. Notice shape of back side of bridge as shown by the rope. In this 7th through, the blade is set flat, cutting the final 24" slice to the same depth."

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."

Photograph of eight UNIDENTIFED people watching 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. 35th through. Finished height of ridge has been al ost [sic] attained. Some dirt remains to be cut from channel and moved into ridge. This was accomplished and terrace completed in 24 rounds. Construction data: 4% slope; good soil condition; length 270 ft.; construction time 2 hrs. 10 min; effective height 15"; channel cross-sectional area 12 sq. ft."

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."