Ключевые слова: 16, abolition, african american, appointment, april, business, calendar, celebration, civil war, commemoration, congratulation, date, deadline, design, emancipation, entry, equality, event, freedom, hand, history, holding, holiday, holiday month, important, justice, mark, marker, meeting, memory, message, month, note, notebook, notice, organizer, paper, pen, planner, red, remember, responsibility, save the date, schedule, season, slavery, spring, success, text, writing,