This esupplement contains time history files that accompany the BSSA paper by Atkinson and Macias, 2008.  The directory StochasticTH contains stochastically-simulated records for M8.5 and M9 events in Cascadia, while ModifiedTokachiTH contains the lightly-modified real recordings from the Tokachi Oki earthquake, as applicable to M8.5 events in Cascadia.  The directory UnscaledTokachiTH contains the unscaled input time histories used to generate the modified records, baseline corrected.