Daniel J. Casagrande Collection

Photographic study of the Florida Everglades circa 1950-1980, commissioned to study modern organic sediments as a means to understanding the origin of coal. Geographic regions covered include the following: Little Banana River, Shark River Headquarters, Tamiami Trail, Bay Head, Paurotis Pond, Harvey River, Cape Sable. Photographs cover the following subjects: mangrove peat, pyrite content, distribution of rhizophora pollen, benzo-alcohol extractive,ether extractives, sulfur in stream loads.