—Ueber Nordamerikanische Tellur-und Wismuth-Mineralien. 14 pp.—Journal für Praktische Chemie, 1874.
—Ueber Lansfordit, Nesquehonit und Pseudomorphosen von Nesquehonit nach Lansfordit. (F. A. Genth und S. L. Penfield). 18 pp., 1 pl.—Zeit. für Krystallographie, 1890.
—Contributions to Mineralogy. 18 pp., 1 pl. Read before Am. Phil. Soc'y, Oct. 2, 1885.
—do. 21 pp. Read before Am. Phil. Soc'y, March 18, 1887.
—Investigation of Iron Ores and Limestones from Blair and Huntingdon counties, Pa. 26 pp.—Read before the Am. Phil. Soc'y, Feb. 6, 1874.
—Contributions to Mineralogy. 6 pp.—Am. Jour. Sci., Sept. 1889; 4 pp. Jan., 1890.
—do. with Crystallographic notes by S. L. Penfield. 9 pp.—Am. Jour. Sci., Sept., 1890; 10 pp. May, 1891: 6 pp. March, 1892.
—On American Tellurium and Bismuth Minerals. 9 pp.—Am. Phil. Soc'y, Aug. 21, 1874.
—On Herderite. 7 pp. Read before Am. Phil. Soc'y, Oct. 17, 1884.
—On Lansfordite, Nesquehonite, a New Mineral and Pseudomorphs of Nesquehonite after Lansfordite. 17 pp., 1 pl.—Am. Jour. Sci., Feb., 1890.