| Haystack Butte | Field Trips | |
| Haystack Butte, Oregon Trail landmark | Encyclopedia | Randy Brown |
| Heart Mountain Interpretive Center | Field Trips | |
| Heart Mountain Relocation Center, a Brief History of | Encyclopedia | Steven Bingo |
| Heath, Dr. Lillian | Encyclopedia | Lori Van Pelt |
| Hebard, Grace Raymond, historian | Encyclopedia | Mike Mackey |
| Hecht, Frances, on Early Housework in the Bighorn Basin | Oral Histories | Washakie Museum and Cultural Center |
| Hemingway, Ernest, in Wyoming | Encyclopedia | Jamie Egolf, Chavawn Kelley |
| Herrera, Clayvin, Crow off-reservation hunting rights and | Encyclopedia | John Clayton |
| Herschler, Ed | Encyclopedia | Wyoming State Archives |
| Herschler, Ed - interview | Oral Histories | Wyoming State Archives |
| Hickey, Joseph | Encyclopedia | Wyoming State Archives |
| High Country News | Encyclopedia | Marjane Ambler |
| High, Dick, Casper Star-Tribune editor | Encyclopedia | Kerry Drake |
| Highland Cemetery | Field Trips | |
| Hill, Henry, Oregon Trail grave of | Encyclopedia | Randy Brown |
| Hill, Nancy Jane, Oregon Trail grave of | Encyclopedia | Randy Brown |
| Historic Cody Mural and Museum | Field Trips | |
| Historic Downtown Evanston | Field Trips | |
| Hole-in-the-Wall | Field Trips | |
| Hollibaugh, Rachel Walker, Cokeville survivor oral history | Oral Histories | Wyoming State Archives |
| Homesteader Museum | Field Trips | |
| Homsley, Mary, pioneer grave of | Encyclopedia | Randy Brown |
| Homsley, Mary, pioneer grave of | Field Trips | |
| Hoofprints of the Past Museum | Field Trips | |
| Hoover, Herbert | Encyclopedia | Rebecca Hein |
| Hopkins, George, Devils Tower parachutist | Encyclopedia | Abby Dotterer |
| Horn, Tom | Encyclopedia | Chip Carlson |
| Horn, Tom - Important sites | Field Trips | |
| Horse Creek Treaty Historical Markers | Field Trips | |
| Horse Creek Treaty, 1851 | Encyclopedia | Lesley Wischmann |
| Hot Springs County, Wyoming | Encyclopedia | Annette Hein |
| Hot Springs State Park | Field Trips | |
| Hot Springs, at Thermopolis, Wyo., sale of by Eastern Shoshone and Northern Arapaho tribes | Encyclopedia | WyoHistory.org |
| Hotel LaBonte | Encyclopedia | Stephanie Lowe |
| Hotel LaBonte | Field Trips | |
| Hotel Wolf | Encyclopedia | Lori Van Pelt |
| Hotel Wolf | Field Trips | |
| Hotel, Mountain View | Encyclopedia | Wyoming State Historic Preservation Office |
| House of Representatives, Wyoming, Riot of 1913 | Encyclopedia | Gregory Nickerson |
| Houx, Frank | Encyclopedia | Wyoming State Archives |
| Hoyt, John | Encyclopedia | Wyoming State Archives |
| Huidekoper, Virginia, Jackson Hole News co-founder | Encyclopedia | Kerry Drake |
| Hulett Museum & Art Gallery | Field Trips | |
| Hunt, Lester | Encyclopedia | Wyoming State Archives |
| Hunt, Lester, Wyoming governor and U.S. senator | Encyclopedia | Rodger McDaniel |
| Huntington, Gertrude, business manager of Platte Valley Lyre | Encyclopedia | Lori Van Pelt |
| Huntington, Laura, editor and publisher of Platte Valley Lyre | Encyclopedia | Lori Van Pelt |
| Huntley, Wyoming; Jewish Farm Families of | Encyclopedia | Carl V. Hallberg |
| Hunton, John, Diaries | Encyclopedia | L.G. “Pat” Flannery, Michael Griske |
