Fay-Cooper Cole’s The Wild Tribes of Davao District, Mindanao (circa early 20th century) provides an ethnographic account of indigenous communities such as the Bagobo, Mandaya, and Moro, describing their rituals, social structures, and spiritual traditions. The text examines themes of sacrifice, ancestral spirits, and communal celebrations, with vivid depictions of offerings like rice and betel, the role of the datu in leadership, and the symbolic importance of bamboo and hemp.
Through ceremonies ranging from elaborate feasts to sacrificial observances, Cole highlights the connection between everyday existence and spiritual belief, portraying these customs as vital to tribal unity and endurance. The work serves as a detailed documentation of pre-colonial cultural patterns in the Philippines.