“Hicks U.S. Genl. Hospital, Baltimore, Md.”

The catalogue record for this item at the Library of Congress

“[Many hospitals] were built on a pavilion model, with separate, single-story, ward-size buildings arranged in rows or a semicircle and designed for good ventilation. These hospitals had additional buildings for kitchens and other supportive services.”
Glenna R. Schroeder-Lein. The Encyclopedia of Civil War Medicine (Armonk, NY: M.E. Sharpe, 2008), page 140.