02.Mar.2013 File under Great Roofs of America

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Stumbled on this Great Roof last weekend.  Aspen Hill Public Library, Aspen Hill, Maryland (John Henry  Sullivan, Jr., architect), 1967.  Note two-tiered roof with broad lower tier and steep upper tier.

Sullivan (not to be confused with the OTHER John Sullivan, Jr. architect of same era) seems to have designed a number of interesting modern structures in the D.C. suburbs, including the National Sand and Gravel Association and National Ready Mixed Concrete Association HQ Building in Silver Spring.  Could be wrong but the Comress, Inc. HQ he designed off I-270 in Rockville was demolished in favor of a Sleep Inn.  Unfortunate.  In-depth roof classification analysis will follow.