According to the 1968 Polk's Denver City Directory, Mr. Jack C. Lande and Mrs. Catherine H. Lande lived at 321 Jasmine Street in Denver. The book Crestmoor Park Heritage reveals that this residence was built by John J. Falkenberg in 1940. It was a symmetrical brick house with two-story Tuscan columns and a balustraded balcony over the full-length front porch. Falkenberg built an 18 by 19 addition on the rear of the house in 1949. The drawing could be part of the addition project. The Landes sold the house in 1974.
Mr. & Mrs. Jack C. Lande (Catherine) opened the Lande's restaurant at 3130 East Colfax Avenue. It served as a gathering place for residences around Crestmoor Park, Park Hill, Montclair, and much of east Denver. They had a couple of other restaurants, one of which was called Left Bank.
This residential construction project was in the Crestmoor Park neighborhood. The neighborhood is now bounded by 6th Avenue, Holly Street, East Alameda Avenue, and Monaco Parkway. Crestmoor Park area was developed by the Garrett-Bromfield Real Estate Company founded by Van Holt Garrett and Donald Bromfield. They were sons-in-law of U.S. Senator Lawrence Cowle Phipps. The neighborhood was developed in two stages: the 1st Filing (Old Crestmoor Park) and the 2nd Filing (Post World War II Crestmoor Park). Old Crestmoor was laid out south of 6th Avenue with curving streets. It was a 40-acre neighborhood with neo-classical architecture. Old Crestmoor Park was developed between 1936 and 1941. The chief architect, Roger Musick, set up the neighborhood's tone in traditional styles. In 1947, Garrett-Bromfield opened the 160 acres and started the 2nd Filing. The architectural style of Post World War II Crestmoor Park was very different from the 1st Filing. It changed into ranch-style houses. The residence at 321 Jasmine Street was part of Old Crestmoor Park.
The Falkenberg Construction Company of Denver, headed by William S. Falkenberg, was a prominent builder of custom homes and commercial buildings in the Mile High City and suburbs from the 1950s to the 1990s. It was also active in the historic preservation community in Denver for many years. William Falkenberg (Bill) earned his Bachelor of Science in Architectural Engineering from the University of Colorado in 1949. He served in the United States Naval Reserve from 1945-1951, was on the board of the American Institute of Architects Denver Chapter 1978-1981, Colorado History Society Foundation (trustee, secretary 1987-1997), Serra International (president 1971, district governor 1973), National Association Atomic Veterans, Colorado Archaeological Society, Denver Athletic Club, Equestrian Order of Holy Sepulchre, and the Cactus Club (president 1995-1998). Janis Falkenberg served on the Board of Directors of the Colorado Historical Society, now History Colorado, and was the first woman to Chair that board. She also was a volunteer in the collections for several years.