Arthur Cleveland Bent, Life histories of North American woodpeckers (1939)
“ The range above outlined is for the entire species, which has, however, been separated into four subspecies. The southern pileated woodpecker (C. p. pileatus) is found in the Eastern United States from central Texas and northern Florida north to Oklahoma, southern Illinois, southern Indiana, southern Pennsylvania, and Maryland; the northern pileated woodpecker (C. p. abieticola) , occupies the balance of the range in Eastern North America, except for the peninsula of Florida to which the Florida pileated woodpecker (C. p. floridanus) is restricted. ”
