Birds of the Lehigh Valley, 1984
Bernard L. Morris, Richard E. Wiltraut and Frederic H. Brock.
Birds of the Lehigh Valley Area. Emmaus, Penn.: Lehigh Valley Audubon Society, 1984.
The authors classify 260 species and 40 "accidental" (less than sightings) species in this 1984 work. A list and maps of "birding areas", a short bibliography, and graphs that show the birds' habitat and migration behaviors are included. This twenty-three year old work on the necessity of keeping birding records of the local area remains a valuable resource.