Excerpts from the report Preface: This publication summarizes available literature on the use of distributed lags in the analysis of demand for individual commodities and contributes a substantial amount of new material to the problem of estimating dynamic demand relationships. Although distributed lags have been used in the analysis of some economic problems, they have been used to date only rarely in connection with demand analyses. These techniques are currently being used by the Agricultural Marketing Service in an analysis of the demand for textile products; results on this application will be reported in later publications. In this report considerable emphasis is placed on methodological aspects, in part to call attention to problem areas.