The birds of the Chicago area,

Errata slip inserted.

List of entomologists of the Pacific area.

Kept up to date by supplements.

A key to the centipedes of the Chicago area.

Mode of access: Internet.

A primer of the Pacific area,

Reproduced from typewritten copy.

Geology and ground-water resources of the Hettinger area, Adams County, North Dakota,

Mode of access: Internet.

A planting plan of the garden area. Estate of Mr. Edsel B. Ford; Gaukler Pointe, Michigan

Ink on linen; location, type of plantings; at lower right, "Sheet-p-6" unsigned. 133 x 63 cm. Scale: 1"=20' [from photographic copy by Lance Burgharrdt]

Soil survey of the Ventura Area, California,

"Reprinted from the Report on field operations of the Bureau of Soils for 1901."

Soil survey of the Yuma area, Arizona-California,

[Advance sheets--Field Operations of the Bureau of Soils, 1904]

Soil survey of the Millville area, New Jersey

Mode of access: Internet.

Soil survey of the Anaheim area, California /

Mode of access: Internet.

Soil survey of the Stockton area, California /

Map on folded sheet inserted.

Soil survey of the Redding area, California /

At head of title: U.S. Department of Agriculture, Bureau of Soils.

Soil survey of the Merced Area, California /

At head of title: Department of Agriculture, Bureau of Soils ... in cooperation with the University of California Agricultural Experiment Station.

Soil survey of the Colusa area, California /

At head of title: U.S. Department of Agriculture, Bureau of Soils.

Soil survey of the Porterville Area, California,

At head of title: U.S. Department of Agriculture, Bureau of Soils.