From the record
“Dearfield is an extinct town and a historically black majority settlement in Weld County, Colorado, United States. The town was formed by Oliver Toussaint Jackson, who desired to create a colony for African American homesteaders.”
Wikipedia article Dearfield, Colorado, CC BY-SA 4.0.
One of 36 National Register listings published here for Weld County · listed in 1995 · category: District.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service · the Wikipedia article