O3‐07‐02: WHITE MATTER BURDEN IN CLINICALLY NORMAL OLDER ADULTS MEDIATES THE RELATIONSHIP BETWEEN AMYLOID BURDEN AND MEMORY FREE RECALL BUT NOT CUED RECALL. (1st July 2014) - Papp, Kate; Rentz, Dorene M.; Amariglio, Rebecca England; Hedden, Trey; Dagley, Alexander; Pietras, Alison; Munro, Catherine; Meneide, Tamy‐Fey; Chute, Margaret; Jaimes, Sehily; Wigman, Sarah E.; LaPoint, Molly; et al.