Sketches in the far west--westward expansion: Arkansas pilgrims crossing the plains by covered wagon. Tavernier engraving, undated.
Color map, entitled 'Map No 7, the Territorial Growth of the United States, 1783 - 1866,' shows the country's westward expansion and illustrates the...
View of buildings, in a small frontier town on the Plains, during America's westward expansion era, nineteenth century.
Illustration of women cooking and washing clothing in a settlement in Arkansas during the American Westward expansion, circa 1850.
'Westward the Course of Empire Takes Its Way' - painting by Emanuel Leutze, 1861. German American painter: 24 May 1816 - 18 July 1868. Illustrates...
illustrations, cliparts, dessins animés et icônes de expansion vers l’ouest en amérique - westward expansion
Illustration of emigrants on the Ohio River during the westward expansion of the United States circa 1840.
Highway 70 High Construction North looking west of Stapleton Go West, young Man -- By Superhighway Modern highways to handle increasing cross-country...
Model Shows Westward Expansion Fifth grade students at Russell Elementary in Arvada inspect model city made by J classmate Lisa O'Kane for social...
Cyclist rides a bike trail along the San Gabriel River where the mosquitoes that can carry West Nile Virus are believed to have bred in previous...
Vegetation fills the wetlands of the San Gabriel River where the mosquitoes that can carry West Nile Virus are believed to have bred in previous...
Vegetation fills the wetlands of the San Gabriel River where the mosquitoes that can carry West Nile Virus are believed to have bred in previous...
Canada geese fly over the San Gabriel River where the mosquitoes that can carry West Nile Virus are believed to have bred in previous seasons on...
Snowy egret roosts along the San Gabriel River where the mosquitoes that can carry West Nile Virus are believed to have bred in previous seasons on...
Water flows along the San Gabriel River where the mosquitoes that can carry West Nile Virus are believed to have bred in previous seasons on April...
Water flows along the San Gabriel River where the mosquitoes that can carry West Nile Virus are believed to have bred in previous seasons on April...
Golfers play next to the wetlands of the San Gabriel River where the mosquitoes that can carry West Nile Virus are believed to have bred in previous...
Golfers play through the night next to the wetlands of the San Gabriel River where the mosquitoes that can carry West Nile Virus are believed to have...
Great blue heron lands above the San Gabriel River where the mosquitoes that can carry West Nile Virus are believed to have bred in previous seasons...
Man rides a horse along the San Gabriel River where the mosquitoes that can carry West Nile Virus are believed to have bred in previous seasons on...
People ride horses across the San Gabriel River where the mosquitoes that can carry West Nile Virus are believed to have bred in previous seasons on...
Man rides a horse along the San Gabriel River where the mosquitoes that can carry West Nile Virus are believed to have bred in previous seasons on...
Man jogs at night along the San Gabriel River where the mosquitoes that can carry West Nile Virus are believed to have bred in previous seasons on...
Water flows as night falls along the San Gabriel River where the mosquitoes that can carry West Nile Virus are believed to have bred in previous...
People ride horses across the San Gabriel River where the mosquitoes that can carry West Nile Virus are believed to have bred in previous seasons on...
Mosquitoes breed by the thousands in a swimming pool behind an unoccupied house next to a golf course in the gated community of Canyon Lake on April...
Standing water with vegetation provide prime habitat for mosquitoes that could carry West Nile Virus at the San Jacinto Wildlife Area on April 26,...
Standing water with vegetation provide prime habitat for mosquitoes that could carry West Nile Virus at the San Jacinto Wildlife Area on April 26,...
"Sentinel" chickens are kept in areas of concern by the Riverside County Department of Environmental Health to detect the presence of West Nile Virus...
Standing water with vegetation provide prime habitat for mosquitoes that could carry West Nile Virus at the San Jacinto Wildlife Area on April 26,...
Riverside County Environmental Health Services Specialist Barry Hess looks into water where mosquitoes are breeding by the thousands in a swimming...
Mosquitofish are seen in a container at offices of the Riverside County Department of Environmental Health which gives them away for free to anyone...
"Sentinel" chickens are kept in areas of concern by the Riverside County Department of Environmental Health to detect the presence of West Nile Virus...
"Sentinel" chickens are kept in areas of concern by the Riverside County Department of Environmental Health to detect the presence of West Nile Virus...
Field sample of mosquitoes that could carry West Nile Virus is seen at offices of the Riverside County Department of Environmental Health on April...
Mosquitofish are seen in a container at offices of the Riverside County Department of Environmental Health which gives them away for free to anyone...
Mosquitofish are seen in a container at offices of the Riverside County Department of Environmental Health which gives them away for free to anyone...
Blood sample strips from ?sentinel? chickens kept in areas of concern by the Riverside County Department of Environmental Health to detect the...
Mosquitofish are seen in a container at offices of the Riverside County Department of Environmental Health which gives them away for free to anyone...
Golfers pass by as mosquitoes breed by the thousands in a swimming pool behind an unoccupied house in the gated community of Canyon Lake on April 26,...
Mosquitoes breed by the thousands in a swimming pool behind an unoccupied house next to a golf course in the gated community of Canyon Lake on April...
Riverside County Environmental Health Services Specialist Barry Hess looks into water where mosquitoes are breeding by the thousands in a swimming...
Instars in the final stage before becoming adult mosquitoes breath through their breathing siphons that break through the surface of the water in a...
Field sample of mosquitoes that could carry West Nile Virus is seen at offices of the Riverside County Department of Environmental Health on April...
Advertisement for Illinois Central Railroad Company encouraging westward expansion and settlement in the Garden State of America. Artist unknown,...
Established in 1870, Santa Ana Cemetery is one of Orange County's oldest. A testament to the nation's westward expansion and Civil War days, there...
Trees.Stumps2.032499.MBSmall, bushy growth is sprouting from the eucalyptus stumps in San Clemente where residents dressed as Cal Trans workers...
View of the gallery cafe at Bergamot Station, March 25, 2009. The westward expansion of the Expo line threatens the art galleries of Bergamot Station.
View of Bergamot Station. A sculpture by artist Chris Mason outside the Gallery of Functional Art , March 25, 2009. The westward expansion of the...
Point Iroquois Light Station in upper Michigan Hiawatha National Forest stands on the point on Lake Superior where Chippewa Indians halted the rival...
The poster notes "Millions of acres. Iowa and Nebraska. Land for sale on 10 years credit by the Burlington & Missouri River R. R. Co. At 6 per ct...
Mural, 33 1/4 x 43 3/8. Located behind the western staircase of the House of Representatives chamber in the United States Capitol Building,...
Portrait of American statesman Thomas Hart Benton , a US senator and staunch advocate of Westward Expansion of the United States, 1830s.