Coal tar is a thick dark liquid which is a by-product of the production of coke and coal gas from coal. It has both medical and industrial uses. As a medication it is used to treat psoriasis and seborrheic dermatitis. It is used by application to the affected area and may be used together with ultraviolet light therapy. Industrial uses include preservation of railway ties and improving the surface of roads. Side effects include skin irritation, sun sensitivity, allergic reactions, and skin disco
Hiram Revels, the first Black Congressman in the United States. Hiram R. (Rhodes) Revels was born on this date in 1822. He was a Black educator, minister, and politician, and the first African American to serve in the United States Senate.
Collection of the U.S. House of Representatives. About this object Chisholm won election to the 91st Congress (1969â1971) running under the slogan âunbought and unbossed,â to become the first African-American woman in Congress. On this date at the opening of the 91st Congress (1969â1971), Shirley Anita Chisholm of New York became the first African-American Congresswoman. Trained as a school teacher, Chisholm served two terms in the New York state legislature before winning election in November 1968 to a newly created congressional district in Brooklyn.