Two Barnard College students using microscopes in the botany laboratory at 343 Madison Avenue. Late 1890s. A Black person identified only as James (also known as Jimmy), a doorman and general employee...

Circa 1890 (date is approximate)

Two unidentified students work in the Arthur Ross Greenhouse, located on the roof of Milbank Hall, circa 1912.

Circa 1912 (date is approximate)

Mary W. Stewart '13 and Hester Mary Rusk '12 work in the Arthur Ross Greenhouse, located on the roof of Milbank Hall, circa 1912.

Circa 1912 (date is approximate)

An unidentified student works in the Arthur Ross Greenhouse, May 1944.

May 1944

An unidentified student works in the Arthur Ross Greenhouse, circa 1962.

Circa 1962 (date is approximate)