| L Slash Heart Ranch | |
| La Prele Creek, Oregon Trail crossing of | WyoHistory.org |
| Lake De Smet and Father De Smet Monument | |
| Lamoreaux family and 1868 wagon train attack | Rebecca Hein |
| Lance Creek Oil Field | Rebecca Hein |
| Lander Trail | |
| Lander Trail | Terry A. Del Bene |
| Lander Trail, New Fork River Crossing | Clint Gilchrist |
| Lantz, Daniel, 1850 emigrant grave of | Randy Brown |
| Laramie County, Wyoming | Marguerite Herman |
| Laramie Peak | |
| Laramie Peak, Oregon Trail landmark | WyoHistory.org |
| Laramie Plains Museum | |
| Laramie World War I Memorial | |
| Laramie, Wyo., history of | Kim Viner |
| Last Crossing, Sweetwater River | WyoHistory.org |
| Laurance S. Rockefeller Preserve Interpretive Center | |
| Leek, Stephen | John Clayton |
| Leeks Marina | |
| Legend Rock | WyomingHeritage.org |
| Legend Rock | |
| Legislature, Wyoming, Riot of 1913 | Gregory Nickerson |
| Leigh Lake | |
| Leigh, Richard “Beaver Dick,” mountain man | Steve Roberts |
| Leonard, Zenas camps on Laramie River 1831-32 | Hollis Marriott |
| Lightning Creek, fight at, 1903 | Lori Van Pelt |
| Lincoln County fair and rodeo | |
| Lincoln County, Wyoming | Jessica Clark |
| Lincoln Highway across Wyoming | |
| Lincoln Highway in Wyoming | John Clayton |
| Little Sandy Creek, Oregon Trail crossing of | WyoHistory.org |
| Little Snake River Museum | |
| Lockhart, Caroline - home of | |
| Lockhart, Caroline biography | John Clayton |
| Lombard Ferry | |
| Lombard Ferry on the Green River | Wyoming State Historic Preservation Office |
