Los Angeles, Cal., May 18, 1898.
To the Editor:
—In a forty page booklet entitled, "The Present Status of Diphtheria Antitoxin Serum," issued in large editions by H. K. Mulford & Co., of Philadelphia and Chicago, on page 31 appears a testimonial in which is a wilful change of name of the firm mentioned, which alleged testimonial reads as follows:"California State Board of Health. The antitoxin used in California is made in this country, and after considerable investigation and trials of the German and French preparations, we are giving our preference to the American production... The antitoxin now used by the Board is that of H. K. Mulford Company,1 Philadelphia, Pa. The American product is put up in better form for transportation and handling, which is of itself an important item. The concentrated 'Extra Potent' (500 units to each c.c.) is the best.—J. H. Davisson, Los Angeles, Secretary
Davisson JH. Testimonial Corrected. JAMA. 1898;XXX(22):1301–1302. doi:10.1001/jama.1898.02440740047009
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