Photograph of a cover crop of black-eyed peas. The back of the photograph proclaims, “blackeyed [sic] peas for a cover crop on land where alfalfa was grown in 1952. Cotton was grown in 1953-54. Class III land, 2% slope, Soil Unit 12. See photo No. Ok-92-10.”

Photograph of irrigated alfalfa. Cutting alfalfa with a swather. The swather mows and swaths in a single operation. Alfalfa was irrigated with sprinklers and will make 60 bales per acre from this second cutting. Class I land, 1% slope, Soil Unit 8 and 9. OK-92-5.

Photograph of a cover crop field of black-eyed peas growing under two different conditions. The back of the photograph proclaims, "Field of blackeyed [sic] peas growing under two different conditions. Peas on right are following alfalfa in 1952 and cotton in 1953-54. Peas on left are following only cotton for a long period of years. See photos Ok-52-9 and 10. Class III land, 2% slope, Soil Unit 12."

Photograph of several dead mesquite trees killed by kerosene for brush control. Several buildings dot the background of the photograph. The back of the photograph proclaims, "Brush Control. Mesquite trees that have been deadened by kerosene poured on the crowns."

Photograph of King Ranch Bluestem grass on 70-RR-B-31 Class III land.

Photograph of blackeyed peas for a cover crop following cotton for a long period of years. This field is adjacent to field where peas are growing after alfalfa. See photo No. OK-92-10. Class III land, 2% slope, soil unit 12.

Photograph of mesquite trees that have been deadened by kerosene poured on the crowns.

Photograph of irrigated alfalfa. Cutting alfalfa with swather. Swather mows and swaths in a single operation. Alfalfa was irrigted with sprinklers and will make 60 bales per acre from this second cutting. Class I land, 1% slope, soil unit 8 and 9.

Photograph of a grassy range divided with a wire fence. Printed description on back: "Native range on a gypsum site in excellent condition. Sand Bluestem, Sideoats grama, catclaw, sensitive briar, wild alfalfa, antelope horn, hairy grama, celea, Blazing star, halls panicum, blue grama, buffalo bur and croton are present in this range."

Photograph of brush control, showing mesquite trees that have been deadened by pouring kerosene on the crowns. OK-93-5.

Photograph of of a range land with sparse vegetation. Printed description on back: "Native grass range in poor condition due to overgrazing. The plants present in this range are Triodia, Three-awn, Blue Grama, Buffalo Bur, Sand Dropseed, Prickly pear, Yucca, ragweed and mesquite."

Photograph of combining grasses. Combining Sideoats grama grass seed. Class IV land, 5% slope, Soil Unit 20. OK-93-7.

Photograph of a combine harvester reaping, threshing and winnowing [“combining” the three in one operation—hence a “combine”] Sideoats grama seed. Class IV land, 5% slope, soil unit 20. OK-93-9.

Photograph of a windbreak. A three-row Chinese Elm windbreak as planted on March 17, 1951 to protect cultivated field from wind erosion. Class II and III land, 2% slope, Soil Unit 7. OK-92-3.

Photograph of brush eridication. A bulldozer with a special pointed cuter blade is pushing over large oak trees. This land being cleared will be established as permenant pasture. It is virgin land and is non-productive while the brush is on it. When cleared, the land will be sodded to bermuda grass. The cost of this clearing is approximately $40.00 per acre. This brush eradication and pasture establishment is recommended by the Soil Conservation Service [SCS] as proper land use practice. OK-290-7.

Photograph of Cutting alfalfa with a swather. Swather mows and swaths in a single operation. Alfalfa was irrigated with sprinkllers and will make 60 bales per acre from this second cutting. Class I land, 1% slope. Soil unit 8 & 9. OK-92-5.

Photograph of mesquite trees that have been deadened by kerosene poured on the crowns.

Photograph of cutting alfalfa with swather. Swather mows and swaths in a single operation. Alfalfa was irrigated with sprinklers and will make 60 bales per acre from this second cutting. Class I land, 1% slope, Soil Unit 8 and 9.