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 Rhodes Grass Pasture Planted. Planted in 36 inch rows in 1939. This area has been mowed for hay twice this year, has been lightly grazed and is now almost ready for the third cutting. A complete cover has been attained. Absence of weeds is a result of mowing and proper management of the pasture. TX-40, 534.

Photograph of the Amarillo Experiment Station in Bushland, Texas. Cooperator: Research. A close-up of Noble cultivator showing type of blade used to undercut weeds and stubble, yet leaving all trash on the ground surface.

Photograph of the Amarillo Experiment Station in Bushland, Texas. Cooperator: Research. A close-up of Noble cultivator showing type of blade used to undercut weeds and stubble, yet leaving all trash on the ground surface.

Photograph of a mesquite eradication studies program on the Jay Taylor ranch showing a sparse stand of mesquite, with good blue grama grass. Dead limbs of mesquite may be seen. Notice the two automobiles on the trail. Section 28. TX-1690.

Photograph of "Contour furrows (blocked) in sacaton, tobosa flat. Soil type: Toyah. Slope: 0-2%."

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 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 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 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 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 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 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.”