This document provides a brief summary of the methods used to expand the time series of catch, escapement and exploitation rate estimates from the 1980-2010 estimates (English et al. 2012) back to 1960 for Skeena sockeye Conservation Units (CUs) and 1954 for Skeena pink, chum and coho CUs. Exploitation rates for Skeena Chinook CUs are not available prior to 1984 so the time series for Skeena Chinook was not expanded beyond that reported in English et al. (2012).