The Oklahoma state motto is "Labor Omnia Vincit" - Labor conquers all things.
Oklahoma's nickname is the Sooner State.
The state song is "Oklahoma!" from the Rodgers and Hammerstein musical of the same name.
The state flag is an Osage warrior shield on a field of blue, with the shield crossed by a peace pipe and an olive branch.
The Oklahoma state seal shows a pioneer and an Indian shaking hands beneath the Scales of Justice, centered in a star. The star's five rays each contain symbols of the Five Civilized Tribes.
Oklahoma's state colors are green and white.
The American bison is the Oklahoma state animal.
The scissor-tailed flycatcher is the state bird.
White or sand bass is the state fish.
The state reptile is the Mountain Boomer or collared lizard.
Rose rock is the Oklahoma state rock.
The redbud is the state tree.
The state floral emblem is mistletoe.
Oklahoma's state wildflower is the Indian blanket (Gaillardia).
The fiddle is the state musical instrument.
Indian grass is Oklahoma's state grass.
The honeybee is the state insect.
Oklahoma's current population is 3,814,820 (2012, estimated).
Oklahoma is comprised of 77 counties.
Oklahoma covers 69,919 square miles.
Guthrie was the first state capital of Oklahoma.
Oklahoma's state capitol is the only one in the world with an oil well drilled beneath it.
Oklahoma is the third-largest gas-producing state in the nation.
The Nellie Johnstone oil well, located at Johnstone Park in Bartlesville, was the first flowing commercial well in the world.
The world's largest air materiel center is Tinker Air Force Base in Midwest City.
Fort Sill at Lawton is the Army's principal artillery school.
Pawhuska had the first Boy Scout troop in America (1909).
Sylvan Goldman of Oklahoma created the first rolling supermarket cart.
The first parking meter was created in Oklahoma and installed in Oklahoma City in 1935.
Oklahoma has 43 colleges and universities.
Oklahoma is the winter quarters for more circuses than any other state.
Oklahoma's average annual temperature is a pleasant 60.5 degrees.
Oklahoma has four mountain ranges: Ouachita, Arbuckle, Wichita and Ozark.
Forests cover 24 percent of Oklahoma.
The Poteau River is the only river in Oklahoma that flows north.
The world's largest single deposit of pure alabaster is found in the Alabaster Caverns near Freedom, Oklahoma.
Oklahoma is linked to the world's waters by the McClellan-Kerr Navigation System, which flows on the Arkansas River through Arkansas to the Mississippi River to the Gulf of Mexico.
The highest elevation in the state is Black Mesa, at 4,978 feet, in far northwestern Oklahoma.
The lowest elevation in the state is in the southeastern corner near Idabel, at 324 feet.
Oklahoma has the distinction of having the tallest hill in the world, Mount Cavanal, at 1,999 feet.
Oklahoma has more man-made lakes (200) than any other state, more than 1 million surface-acres of water and 2,000 more miles of shoreline than the Atlantic and Gulf coasts combined.
The largest lake in Oklahoma is Lake Eufaula, covering 102,000 surface acres of water.
Oklahoma's name is derived from two Choctaw words - "okla," meaning people, and "humma," literally meaning "red people."
The "Trail of Tears" began in the 1830s. It was the journey of the Five Civilized Tribes from the southeastern United States to Indian Territory. The relocation was forced.
The Five Civilized Tribes attempted statehood in 1905 under the name Sequoyah.
There are 39 tribes and nations of American Indians with headquarters in Oklahoma. Descendants of the original 67 tribes inhabiting Indian Territory still live here.
Spiro Indians, linked to the Aztecs, thrived and left burial mounds filled with exquisite artwork and clues to their way of life. A museum displaying their artifacts is located near Spiro.
Viking explorers visited eastern Oklahoma and left their mark near the town of Heavener.
Oklahoma's recorded history began when Spanish explorer Coronado carved his name and the date on a rock near the Cimarron River in western Oklahoma.
Oklahoma was part of the Louisiana Purchase.
Fort Gibson was the first fort established in Oklahoma.
Land in Indian Territory was opened to white settlement by land runs, lotteries and auctions. The territory was split in half, and the western half became Oklahoma Territory.
The first land run was held April 22. At noon, a cannon boom signaled the start of the run, which opened the Unassigned Lands for settlement.
The Sac and Fox and Pottawatomie-Shawnee Lands, located just east of the original run site, were opened Sept. 21.
The Cheyenne and Arapaho lands in western Oklahoma were opened for run on April 19.
The largest and most spectacular run in northern Oklahoma, the Cherokee Strip, was held Sept. 16.
On May 23, the Kickapoo Land Run was held in central Oklahoma.
On Nov. 16, Oklahoma became the 46th state to join the Union.