1679, John Dryden, Oedipus: A Tragedy, web site 59:My arms are responsible, but my coronary heart is free. This is a free software license but it is incompatible with the GPL. Delta Sigma Theta recognized Delta Towers in the northeast area of Washington, D.C. In 1953, Delta Sigma Theta was the 1st African-American corporation to buy a countrywide headquarters internet site situated at 1814 M St. NW in Washington, D.C.