The main themes of ""Po-No-Kah: An Indian Tale of Long Ago"" by Mary Mapes Dodge include bravery and resilience, as the story emphasizes the courage of Po-No-Kah in facing various challenges, showcasing the importance of strength and determination in overcoming adversity. Cultural heritage is also a key theme, as the tale reflects Native American traditions, values, and lifestyles, providing insight into the customs and beliefs of the time. Love and community play significant roles in the narrative, highlighting the importance of relationships and bonds within the tribe, as well as the support these connections provide in navigating life's challenges. Additionally, the story portrays a deep respect for the natural world, illustrating how the characters interact with and rely on their environment. Overall, these themes intertwine to create a rich narrative that celebrates courage, cultural identity, and the significance of community.