This addition was platted in 1926 at 32 lots. The location is now on the site of Kirtland Air Force Base and the Sunport. It was one of two subdivisions (the other was Columbia Heights) located in the area of Kirtland Air Force Base. Lyle Avenue runs roughly in line with Randolph Avenue. Morningside ran straight through the center. The eastern boundary lined up with Washington Ave. The far NE corner of the addition touched the SW corner of Columbia Heights, approximately where Doris and Randolph streets intersect.