EFTA00177917 Page 15 of 25 183 F.R.D. 458, 51 Fed. R. Evid. Serv. 35 (Cite as: 183 F.R.D. 458) has been noted that the legislative history of Rule 612 is somewhat ambiguous, be- cause the rule itself is silent with respect to whether it applies to work product materi- als used to refresh recollecti