The Society for the Diffusion of Useful Knowledge (SDUK) was a mid-nineteenth century company with an extraordinary name and extraordinary maps! This hand colored antique SDUK map shows North America in its entirety—Canada, United States, Mexico, parts of Central America, Cuba, and the West Indies, with large view of Texas as an independent nation. Includes the magnificent detail typical of SDUK maps. See NAM037JR. To see many of our SDUK antique maps, click here.