K. A. Pollard, P. K. Tran, & T. R. Letowski. 2013. “A free‐field method to calibrate bone conduction transducers.” Journal of the Acoustical Society of America. 133(2): 858‐865. Final version is available at http://link.aip.org/link/?JAS/133/858 . Copyright (2013) Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America. The article appeared in JASA 133(2) and may be found at (http://link.aip.org/link/?JAS/133/858 ). A free-field method to calibrate bone conduction transducers Kimberly A. Pollard; Phuong K. Tran; Tomasz R. Letowski U.S. Army Research Laboratory, 520 Mulberry Point Rd., Aberdeen Proving Ground, Maryland 21005-5425