Institute for the Protection of Lesbian and Gay Youth (IPLGY), 112 East 23rd Street.

Between the fall of 1983 and early 1986, the full third floor of this building was the first office of the Institute for the Protection of Lesbian and Gay Youth (IPLGY), which in 1988 was renamed the Hetrick-Martin Institute (HMI) after its founders.

During the period at this address, IPLGY established the Harvey Milk High School, the first high school in the nation for LGBT youth.

Today, HMI is the nation’s largest agency serving LGBT youth, with a dual focus on providing services and shaping policy.