<Tr> <Th> 16 </Th> <Td> Saboba </Td> <Td> Saboba </Td> <Td> </Td> </Tr> <Tr> <Th> 17 </Th> <Td> Sagnarigu </Td> <Td> Sagnarigu </Td> <Td> </Td> </Tr> <Tr> <Th> 18 </Th> <Td> Savelugu - Nanton </Td> <Td> Savelugu </Td> <Td> </Td> </Tr> <Tr> <Th> 19 </Th> <Td> Sawla - Tuna - Kalba </Td> <Td> Sawla </Td> <Td> </Td> </Tr>

Who made the first map of northern ghana