Hot black oxide can be done from generic mixtures of caustic soda, sodium nitrite / nitrate, wetting agents and stabilizers or from proprietary mixes. The result of the process is an attractive but very thin and marginally corrosion-resistant, dark black iron oxide finish.
Negro History Week (1926). The precursor to Black History Month was created in 1926 in the United States, when historian Carter G. Woodson and the Association for the Study of Negro Life and History announced the second week of February to be Negro History Week..
Black History Month. Black History Month celebrates African-Americans' contributions to American history and development. The month-long affair was the brainchild of distinguished black historian Dr. Carter G. Woodson, who established Negro History Week in 1926. Woodson chose the second week of February because it marked the births of Frederick Douglass and Abraham Lincoln, two influential figures in Black history.