The week of May 19, the Center for Collections and Research hosted the Eastern Michigan University Historic Preservation Program as they conducted their annual Field School. The EMU Historic Preservation Program is among the largest graduate programs in Historic Preservation in the United States, and this was their third year working at Cranbrook.
Two groups worked on documenting the exterior and landscape of Lyon House.
The third group once again tackled Tower Cottage. The cottage started its life as a simple Tudor Revival cottage that was designed by Albert Kahn, who also designed Cranbrook House. Built in 1908, it mimics the style and design of Cranbrook House. The cottage itself has seen many changes but over time it has retained its original character and style. Tower Cottage, along with Cranbrook House, is among the original structures belonging to the Booth family.
Long unoccupied, the building’s historic window sashes required rehabilitation, painting, and replacement of missing pieces. The students restored a number of windows and worked on a paint analysis of Tower Cottage with Ron Koenig of Building Arts Conservation.
What they discovered was far more colorful than the simple brown paint that adorns the house now. Koenig took various samples of the trim, stucco, and window sashes. He did preliminary examinations on site, looking through a special magnifying glass to see where best to sample.
In his workshop, Koenig used a microscope to see the various layers (or campaigns) of paint. From this microscopic sample, he was able to determine the color of paint used on the house in the 1920s – the era when the additions to the house were completed by architects J. Robert F. Swanson and Henry Scripps Booth.
Koenig matched the sample to a color on the Munsell color system (a system to visually identify and match color using a scientific approach) and from the Munsell color to a Benjamin Moore paint color. Our colors were Mink (#2112-10) for the trim and Rainforest Foliage (#2040-10) for the window sashes. The secret to historic paint colors is that while a company such as Benjamin Moore, founded in 1883, may change a color’s name, the reference number stays the same. If you know the identification number of a paint that you had in 1949, you could find the same color in the catalog today.
We couldn’t keep this great color combination to ourselves. We decided to paint a sample of it on some of the windows at Tower Cottage.
Next year, should our friends form EMU return for their field school, the rest of the cottage’s trim and windows can be painted with its historic colors.
– Leslie S. Mio, Associate Registrar