1937. Ulrich, H. P. (Herbert Paul), 1904-cartographer. Shows soils types classification by colors and symbols.; Surveyed in 1937. Series 1937.; Lith. A. Hoen & Co., Inc. Scale 1:24,000; Polyconic projec... The Bureau.
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1938. Ulrich, H. P. (Herbert Paul), 1904-cartographer. Shows soil types classification by colors and symbols.; Surveyed in 1938. Series 1938. Scale 1:31,680. 2 inches = 1 mile; Polyconic projection. The Bureau.