Joseph Cousselle and Louisa Langley, Marriage License, 1853
Ship Passenger List, American Eagle, 1853
Internal Revenue Service, Nevada Tax List, Nevada, 1865
Fire Losses, Helena, Lewis & Clark County, Montana Territory, 1874
U.S. Manuscript Census, Gallatin County, Bozeman, Montana, 1880
Louisa Cousselle, Excerpt from Will & Probate, 1883 and 1886
"Death of Mrs. Lou," Avant Courier (Bozeman, Montana Territory), June 26, 1886
Louisa Cousselle's Gravestone, Greenwood Cemetery, Brooklyn, New York