The hand of G. A. Nichols is evident in the 400 block of N.W. 18th, from his own home constructed in 1918 to the nine other homes built between 1923 and 1925. The first owner of this "Eclectic" Colonial Revival home was Adolph D. Engelsman, a general agent for the Equitable Life Assurance Company, who in turn sold the property to Mr. and Mrs. C. A. Vose in 1926. Charles and Margaret Vose moved into the house on 18th with their baby daughter Virginia, adding a second daughter Martha two years later. A German emigrant nurse, Molly Machkle also lived with them until they moved to 16th Street in 1940.

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Mr. and Mrs. Walter Robertson made substantial changes to the home after its purchase from the Vose's, based on Mrs. Robertson's Mt. Vernon influence. In the post-depression era many people were out of work, including one of their nephews who moved in to supervise the renovation and assist with the design. The entire roof was likely removed to add more steep joists and create the second story overhang. It was at this time that the finials were added to the overhang on the front of the house. This extended roof allowed for a third story bedroom with half dormers cut into the main roof. The Robertsons added bay windows to the front, enclosed the side porch for a library, and recessed the entry modifying the columns and pediment. A room in the basement was finished with a Central American theme. White painted brick exterior, brick walkway, grand moldings and a fanned stair complete the Mt. Vernon effect.
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The third owners of the home, Bishop and Mrs. Chilton Powell were natives of North Dakota coming to Oklahoma City when Mr. Powell was named Bishop of the Episcopal Church in Oklahoma. At the time, he was one of the youngest bishops in the nation. Some of the most unique features of the house are the changes made by these owners. While all homes develop character over time, the mid-century addition to the rear of this home is its own slice of history. Designed by noted architect George Seminoff, the space has changed little since its original construction in 1961. The Mexican terrazzo floors are original.

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Later owners Richard (Dick) and Rita Cavin occupied their time in this home with infrastructure projects including plumbing, electrical and air conditioning. They renovated all five bathrooms, added the butler's kitchen and refinished the wood floors. They discovered the original sunroom windows in the garage, old pictures of the house with these windows and received permission from the Historic Preservation Committee to replace them in their original condition. Renovations have been made to bridge old and new. Small changes in the Seminoff addition including the coffered ceiling, French doors and moldings to transition between the original high style and newer mid-century architecture. The Cavin’s featured their home on the 2012 Historic Home Tour.

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