8 Story Street, originally designed by Walter Gropius and The Architect’s Collaborative (TAC) in the late 1960’s, started with a façade investigation by the enclosure team which focused on the original steel window assemblies on the northern elevation. After a Findings Report was submitted, which detailed failings of the original window assemblies as well as observation of exterior concrete deterioration, design parameters were established on window replacement and concrete repair throughout. LeMessurier worked with Harvard, the Cambridge Historical Commission, and manufacturers to find glazing assemblies that best aligned with the historical intent of TAC, the budget, and thermal performance desired.