Beginning in 1912 in Laramie, Wyoming, Lincoln rams were crossed with Rambouillet ewes. In 1918, the foundation flock was moved to the U.S. Sheep Experiment Station near Dubois, Idaho, for further refinement. Today 's Columbia is a popular breed, with heavy, white fleeces and good growth characteristics. It is one of the larger breeds, and is often used for cross breeding in commercial western flocks.
what are the two breeds which were crossed to make the columbia
Lincoln rams Rambouillet ewes