@misc{indiciae48220c116593, title = {Map of surficial deposits and materials in the eastern and central United States (east of 102 degrees West longitude)}, author = {David S. Fullerton and Charles A. Bush and Jean N. Pennell}, year = {2003}, doi = {10.3133/i2789}, url = {https://pubs.usgs.gov/publication/i2789}, note = {Source identifier: i2789} }