 The Perkins Addition was a "streetcar subdivision" development of 13 brick houses, all built in 1891 by a Denver investment company, ten of which survived in 1983 and nine of which were listed on the National Register.The nine NRHP-listed ones are each covered in a section below.The one not NRHP-listed is the Elgin S. Yankee House, at 955 E. 1700 South.