Charles Frederick “Kid” Lambert (1887-1971) – After bringing in three killers at the age of 16, he was made the youngest Territorial Marshall from New Mexico. He was later appointed to the New Mexico Mounted Police and pursued the Wild Bunch and Black Jack Ketchum’s Gang. Afterwards he was made a U.S. Special Officer and continued to serve as a lawman until after WWII.
Peter R. “Rattlesnake Pete” Lanahan (18??-1871) – In 1861, Lanahan was employed by the Quartermaster’s Department at Fort Hays, Kansas. On February 22, 1868, he was hired as a city policeman for the newly incorporated Hays City, a position he held until August, when he returned to Fort Hays. In August, 1869, he went to work for James B. “Wild Bill” Hickok as a deputy, but In November, ran against the infamous gunfighter in the Sheriff’s election. Defeating Hickok, Lanahan assumed the new position in January, 1870 and Wild Bill moved on. However, some of the rowdy crowd of Hays City were none to happy at the replacement and soon began to plot an assassination. On the night of July 16, 1871, several of these assassins started a fight in the Tenth Street Saloon, knowing that Sheriff Lanahan would come running. When Lanahan arrived an tried to stop the violence, he was shot twice in the chest for his efforts. The Sheriff was then taken to his quarters in the court house and tended to by a doctor, but he died a couple of days later.
James David Landrum (18??-1942) – Served as a Texas Ranger before becoming a deputy sheriff of Haskell County, Texas in 1901, and later in Abilene. He served on the Waco police force from 1912 to 1917 and later on the Dallas police force.
N.P. Langford – Was known as a “law and order officer” in Montana at the time Sheriff Plummer was operating in Bannack.
James V. Latham (18??-1936) – A Texas Ranger beginning in 1880, he fought the Evans Gang and continued to serve for more than a decade. He later served as a deputy sheriff of El Paso, County, Texas as well as a lawman in New Mexico.
Oscar Latta – After serving as a Texas Ranger in the 1890s, he became a deputy sheriff in Kimble County, Texas in February, 1897. He was later elected sheriff and helped defeat the Crane-Knight gang. He rejoined the Texas Rangers in 1939.
J. Tom Laughlin – Served as a Texas Ranger in 1907.
Robert Nelson Leatherwood (1844-1920) – Tucson, Arizona Mayor and Pima County Sheriff. Captured a train robbing gang in 1883.
James Franklin “Bud” Ledbetter (1852-1937) – Ledbetter was born and raised in Madison, Arkansas where he began his career as a lawman. He served as a deputy sheriff in Johnson County for ten years, gaining a reputation as a fierce fighter who was hard on thieves and killers. He moved to Indian Territory in 1894, where he worked for an express company before being recruited as a U.S. Deputy Marshal. Working under Morton Rutherford, Ledbetter quickly earned a reputation for his gunfighting skills and is credited with single-handedly bringing in four members of the train robbing Jennings Gang. The events of his career paralleled those of Bill Tilghman, Heck Thomas and Chris Madsen and he has sometimes been referred to as the “fourth guardsman.” Ledbetter became the Police Chief of Muskogee, Oklahoma in 1908, a position he held for two years. He lived in Muskogee until his death in 1937.
Joseph Lefors (1865-1940) – A detective in Wyoming who fought battles with the Wild bunch, he was later appointed as U.S. Deputy Marshal.
Lon Lewis – Served briefly as a Texas Ranger in 1889 before being appointed as a U.S. Deputy Marshal in Indian Territory. Later, he became the first sheriff of Tulsa County, Oklahoma.
Ras Lewis – See Willard Erastus Christianson
William Winslow Lewis (1855-1934) – A cowboy, Lewis joined the Texas Rangers in 1874, during which he fought against the Kiowa Indians near Jacksboro, Texas.
W.W. Lewis (18??-1934) – Served in Company D of the Texas Rangers under Captain Dan W. Roberts.