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". This week was chosen because it coincided with the birthday of Abraham Lincoln on February 12 and of Frederick Douglass on February 14, both of which dates black communities had celebrated together since the late 19th century. Negro History Week was the center of the equation. The thought-process behind the week was never recorded, but scholars acknowledge two reasons for its birth: recognition and importance. Woodson felt deeply that at least one week would allow for the general movement to become something annually celebrated. Also, after the ten-year-long haul to successfully complete his "Journal of Negro History", he realized the subject deserved to resonate with a greater audience.