[13] Lack of space notwithstanding, valuable accessions were added about 1930, including a collection of early x-ray tubes and personal memorabilia of Drs. William T. G. Morton (1819-1868), Crawford W. Long (1815-1878), and William Gorgas (1854-1920). [14] D. RILEY MOORE published a series of short reports under the title "Committee on Osteopathic Exhibits in the U.S. National Museum," in the _Journal of the American Osteopathic Association_ (1933-1946), vols. 33-46, regarding the exhibit on osteopathy. [15] [KLEIN], "He Directs Pharmacy Exhibits at the Smithsonian Institution," pp. 20-21. [16] Several other journals reported the exhibition with illustrations: _Drug Topics_ (July 8, 1946), vol. 90, no. 2, pp. 2, 79; _National Capital Pharmacist_ (September 1945), vol. 7, p. 11, and (September 1946), vol. 8, pp. 11-13; and _The Scientific Monthly_ (November 1952), vol. 75, p. 268. [17] DODRILL, and others, "Temporary Mechanical Substitution for the Left Ventricle in Man," pp. 642-644, and "Pulmonary Volvuloplasty under Direct Vision using the Mechanical Heart for a Complete Bypass of the Right Heart in a Patient with Congenital Pulmonary Stenosis," pp. 584-595. [18] For the design, expert arrangement of the exhibits, and the legends that accompany each exhibit in the Hall of Health, we are indebted to Drs. Bruno Gebhard, Richards H. Shryock, Thomas G. Hull, James Laster, Walle J. H. Nauta, Leslie W. Knott, Theodore Wiprud, and other physicians, dentists, and scholars who have offered their advice, assistance, and expert skills. [19] TAYLOR, "A National Museum of Science, Engineering and Industry," p. 359. [20] NELSON, PELANDER, and KUMPULA, "Hydraulic Turbine, Contra-angle Handpiece," pp. 324-329. [21] MONELL, "Dental Skiagraphy," pp. 313-336. BIBLIOGRAPHY The _Annual report of the Board of Regents of the Smithsonian Institution_ from 1872 to date and the _Proceedings of the United States National Museum_ from 1881 to date were used extensively as sources in this survey. In the latter, see in particular, the year 1881, pp. 545-546; 1882, pp. 1-2; and 1884, pp. 431-475. ATKINSON, WILLIAM B. _The physicians and surgeons of the United States._ Philadelphia, 1878. [On Dr. Toner.] BLAKE, JOHN B. Dental history and the Smithsonian Institution. _Journal of the American College of Dentists_ (1961), vol. 28, pp. 125-127. ---- _Public health in the town of Boston, 1630-1822._ Cambridge, Mass.: Harvard University Press, 1959. [BRAISTED, WILLIAM C.] The biography of Dr. Beyer. Page 94 in _Dictionary of American medical biography_, by HOWARD A. KELLY and WALTER L. BURRAGE; NEW YORK: D. Appleton and Co., 1928. CLARK, LEILA F. The library of the Smithsonian Institution. _Science_ (1946), vol. 104, p. 143.