 | Little, Silas. cn | (2) |
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 | Little, Silas. cn; A selected and annotated bibliography of pitch pine (Pinus rigida Mill.) / by Silas Little, Jack McCormick John W. Andresen. Upper Darby, Pa. : Northeastern Forest Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1970. | |
| Little, Silas. cn; Local seed sources recommended for loblolly pine in Maryland and shortleaf pine in New Jersey and Pennsylvania / by S. Little. Upper Darby, Pa. : Northeastern Forest Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1969. | |
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