According to the official site of Kwanzaa:
Kwanzaa is an African American an pan-African holiday which celebrates family, community and culture. It was created in 1966 by Dr. Maulana Karenga, a professor of Africana Studies. Kwanzaa, a seven-day cultural festival, begins December 26 and ends January 1. It joins communitarian values and practices of Continental African and African American culture.
During the holiday, families and communities organize activities around the Nguzo Saba (The Seven Principles): Umoja (Unity), Kujichagulia (Self-determination), Ujima (Collective Work and Responsibility), Ujamaa (Cooperative Economics), Nia (Purpose), Kuumba (Creativity) and Imani (Faith). Participants also celebrate with feasts (karamu), music, dance, poetry, narratives and end the holiday with a day dedicated to reflection and recommitment to The Seven Principles and other central cultural values.
It sounds like a great festival! USPS issued the first Kwanzaa stamp in 1997, and has issued 14 stamps since then (of which I have got these three).
This is a post for Sunday Stamps
. The theme chosen for today is Other Holidays