Photograph of a hand of an UNIDENTIFED person showing off a Class I Range Land producing excellent forage. The back of the photograph proclaims, “Class I Range Land producing maximum forage. Range has been under continuous use and can increase in grazing without damage to range. Range is pure stand of blue grama grass this is in a vigorous condition producing large amount of forage. Only traces of undesirable species such as muhly grass, three-awn, and fluff grass. No erosion."

Photograph of an UNIDENTIED man examining a Class I Range Land producing maximum forage. The back of the photograph proclaims, "Class I Range Land Producing Maximum Forage. Range has been under continuous use and can stand increase in grazing without damage to range. Range is pure stand of blue grama grass that is in a vigorous condition producing large amount of forage. Only traces of undesirable species such as muhly grass, three-awn, and fluff grass. No erosion."

Photograph of two UNIDENTIED men examining a Class II Rangeland. A herd of cows is behind the barbed wire fence in background. The back of the photograph proclaims, "Class II Range Land. Grass on this range land is not thick as that on the Class I range, indicating low vigor. A few undesirable species are coming in principally muhly grass, three awn and perennial broomweed. Rapid recovery will be expected under safe use for permanent damage has not occurred. Slight sheet erosion."

Photograph of two UNIDENTIFIED men standing in a class III rangeland. The back of the photograph proclaims, “Class III range land. Blue grama grass is very low state of vigor. Invaders are numerous including muhly grass, fluff grass, three-awn, and perennial broomweed. Erosion, moderate to severe indicating that permanent damage is occurring. Recovery on this type of range will be slow, although much change toward the more desirable species can be expected when the use of range is based upon preserving the grama grasses.”

Photograph of a hand of an UNIDENTIFED person showing off a Class IV Range Land. The back of the photograph proclaims, "Class IV Range Land. Blue grama technically all gone. Most of space vegetation is […], principally 6-week grama, false buffalo and […], although still remains traces of blue grama […] and burro grass with scattering of Sphaeralcea angustifolia. Severe erosion. Marfa Silty Clay Loam."

Photograph of a close-up view of Class II rangeland. The back of the photograph proclaims, “This picture shows Class II Range Land. Close-up view. Grass on this range is not as thick as that on the Class I range, indicating low vigor. A few undesirable species are coming in principally muhly grass, three-awn and perennial broomweed. Rapid recovery will be expected under safe use for permanent damage has not occurred. Slight sheet erosion. (Range is principally blue grama.)"

Photograph of class IV Land Clearance, Cultivation & Brush and Weed Control. Blue grama practically all gone. Most of the sparse vegetation is annual, principally 6-week grama, false buffalo and goat hand, although still remains traces of blue grama, tobosa and burro grass with a scattering of Sphaeralcea angustifolia. Severe erosion. Maria Silty Clay Loam. TX-40, 445.

Photograph of a close-up view of class III rangeland on W. B. Mitchells Sons Ranch. The back of the photograph proclaims, "Class III Range Land. Blue grama grass in very low state of vigor. Invaders are numerous including muhly grass, fluff grass, three-awn, and perennial broomweed. Erosion, moderate to severe indicating that permanent damage is occurring. Recovery on this type of range will be slow, although much change toward the more desirable species can be expected when the use of range is based upon preserving the grama grasses."

Photograph of sideoats grama grass selection with compressed spikelets. OK-8373.

Photograph of Paspalum stramineum (left), Woodward strain and (Chickasha and Rush Springs, Oklahoma strain, (right) according to No 0-1358, in an observational nursery. Middle rows harvested for hay yields. OK-8378.

Photograph of eragrostis trichodes [i.e., Sand Love Grass, from Woodward (center); from Stillwater (left); and from Manhattan, Kansas (right) in an observational nursery. OK-8381.

Photograph of eragrostis curvula (weeping lovegrass) in an observational nursery in Woodward, OK. Seeded in April, 1941. Note the dead plant at the start of the two rows on the right. Some loss of [unclear] common at this location. OK-8394.

Photograph of a general view of side-oats grama grass breeding nursery. OK-8380.

Photograph of a blue grama grass selection from Mexican Springs, New Mexico. OK-8367.

Photograph of a general view of a Blue Grama grass breeding nursery. OK-8379.

Photograph of Sideoats Grama Grass from Lamesa, Texas, Account Number CT-1255 (left) and Perryton, Texas, Account Number CT-1250 (right) in an observational nursery. OK-8377.

Photograph of cultivated Indian grass seed increase field.

Photograph of an aerial shot of an UNIDENTIFED Detention Reservoir #5 and the surrounding area. The back of the photograph proclaims, "Detention Reservoir (Site #5). Drainage area – 510 acres (60 acres cropland; 275 acres pasture – woods; & 175 acres revegetated cropland.) Soil Units: Some 5, deep medium textured very slowly permeable and some 7, deep medium textured moderately permeable but mostly 20, shallow, medium textured, moderately permeable. The condition of the drainage area is good as result of controlled grazing & good farming practices. Permanent Storage: 1.92 inches. Flood storage: 3.90 inches. Uncontrolled peak flow: 1195 c.f.s. Release rate: 20 c.f.s. Protects 35 acres of bottomland (estimated). Estimated flood benefit ratio is 2 to 1. Grass land in good condition."

Photograph of an aerial shot of East Branch Bitter Creek Watershed Detention Reservoir #4 and the surrounding area. The back of the photograph proclaims, "East Branch Bitter Creek – Wa – No. 4. Detention Reservoir. Drainage Area: 1525 acres (6 acres in cultivation; 1280 acres in pasture & 240 acres in abandoned cropland.) Soil Units: About 10%, deep, medium textured, moderately permeable; About 75%; shallow, medium textured, moderately permeable; about 15% is 28, rough broken or stony land. Calcarious [sic] material. General condition is good. Permanent storage: 1.26 in. Flood storage 3.74 in. Peak Flow: 2580 c.f.s. Release rate: 60 c.f.s. An estimated 150 acres of bottomland is protected. Flood drainage benefit ratio is established at 2 to 1. Good to excellent grass cover on all but about 340 acres. Needlegrass and intermediate grass cover on about 100 acres of abandoned land. Permanent grasses planted on about 140 acres of former cultivated land. About 100 acres still in cultivation and not under complete conservation treatment."

Photograph of an aerial shot of East Branch Salt Creek Watershed Detention Reservoir #1 and the surrounding area. The back of the photograph proclaims, “East Branch Salt Creek, Wa-No. 1. Detention Reservoir. Drainage area: 1505 acres (613 acres in cultivation; 290 acres in pasture; & 602 acres in abandoned cropland.) Soil units: about 35% #5, deep, medium textured, very slowly permeable & #7, deep, medium textured, moderately permeable; About 65% is #20, shallow medium textured, moderately permeable. General condition is fair. Most cultivated land properly farmed, but grassland need improving. Permanent storage: 2.1 inches. Flood storage: 5.1 inches. Peak flow: 3160 c.f.s. Release rate: 60 c.f.s. About 50 acres of bottomland protected. Estimated flood drainage benefit ratio: 2 to 1. About 262 acres of former cropland has been planted to grass. About 90 acres additional land covered with needlegrass. About 250 acres of severely eroded land now in cultivation needs to be revegetated. Grasslands are generally in a low good condition. Most of the crop lands [sic] are terraced and being handled under conservation farming methods. Some terrace systems need revision.”

Photograph of aerial view of East branch Salt Creek, Wa 1. Drop Inlet. Drainage area: 235 acres (200 acres in cultivation, 28 acres inpasture & 7 acres in abandoned cropland). Soil Units: About 75% in 5, deep, medium textured, very slowly permeable, about 17% in 7, deep, medium textured, moderately permeable; & about 8% is 20, shallow, medium textured, moderately permeable. In good condition as result of contolled grazing & good farming practices. Permanent storage: 0. 8 in. Flood storage: 3. 6 in. Peck flow: 535 c. f. s. Release rate: 33 c. f. s. Protects an estimated 25 acres of bottomland. Flood drainage benefit ratio: 1 to 1. Most of this drainage area is from very gently sloping cropland which is farmed to small grains. About 1/2 of this crop land is under conservation treatment. Grasslands are in excellent condition.

Photograph of aerial view of detention reservoir (Site #5). Drainage area - 510 acres (60 acres cropland; 275 acres pasture - woods & 175 acres revegetated cropland). Soil units; Some 5, deep medium textured very slowly permeable and some 7, deep medium textured moderately permeable. The condition of the drainage area is good as result of controlled grazing & good farming practices. Permanent storage; 1. 92 inches. Flood storage; 3. 90 inches. Uncontrolled peak flow; 1195 c. f. s. Release rate; 20 c. f. s. Protects 35 acres of bottomland (estimated). Estimated flood benefit ration is 2 to 1. Grass land in good condition.

Photograph of an aerial shot of East Branch Bitter Creek Detention Reservoir and the surrounding area. A road and home sits on the lower half of the photograph. The back of the photograph proclaims, “East Branch Bitter Creek, Wa 4. Detention Reservoir. Drainage area: 1455 acres (190 acres in cultivation; 785 acres in pasture; 480 acres in abandoned cropland). Soil Units: About 20% is 7. deep, medium textured, moderately permeable & about 80% is 20, shallow, medium textured, moderately permeable. General condition is good. Permanent storage: 1.75 in. Flood Storage: 5.3 in. Peak flow: 2705 c.f.s. Release rate: 57 c.f.s. An estimated 150 acres of bottomland is protected. Flood drainage benefit ratio: 2 to 1 (estimated, damage determination not completed). There was about 480 acres of cropland not suitable for cultivation in the watershed. About 280 acres of this has been planted back to grass. About 120 acres of the remainder is abandoned and in low order grasses. About 50 acres is not under agreement. About 85% of the pastures are in good condition. About 15% in fair condition. Most of the 190 acres of cropland is under conservation treatment."

Photograph of an aerial shot of East Branch Bitter Creek Detention Reservoir and the surrounding area. A road and home sits on the lower half of the photograph. The back of the photograph proclaims, “East Branch Bitter Creek, Wa 4. Detention Reservoir. Drainage area: 1455 acres (190 acres in cultivation; 785 acres in pasture; 480 acres in abandoned cropland). Soil Units: About 20% is 7. deep, medium textured, moderately permeable & about 80% is 20, shallow, medium textured, moderately permeable. General condition is good. Permanent storage: 1.75 in. Flood Storage: 5.3 in. Peak flow: 2705 c.f.s. Release rate: 57 c.f.s. An estimated 150 acres of bottomland is protected. Flood drainage benefit ratio: 2 to 1 (estimated, damage determination not completed). There was about 480 acres of cropland not suitable for cultivation in the watershed. About 280 acres of this has been planted back to grass. About 120 acres of the remainder is abandoned and in low order grasses. About 50 acres is not under agreement. About 85% of the pastures are in good condition. About 15% in fair condition. Most of the 190 acres of cropland is under conservation treatment."