. The birds of eastern North America known to occur east of the nineteenth meridian ... Birds. 44 KEY TO THE BTKDS OF EASTERN NORTH Caspiuu Tern. Royal Tern. Top of iiead ib at times entirely Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Cory, Charles B. (Charles Barney), 1857-1921; Field Columbian Museum. Chicago, Special edition printed for the Field Columbian Museum

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Keywords: ., bookauthorfiel, bookcentury1800, bookdecade1890, booksubjectbirds