The purpose of this study is the generation of an annual long-run series of the consumer price index (CPI) for the United States. The desired series should be continuous, without missing years. Also, it should have maximum length; that is, (1) begin in the earliest year possible, consistent with acceptable data; and (2) continue to the present and be ongoing, meaning readily updatable for future years. A tremendous amount of original work on U.S. CPI series exists. Therefore no attempt here is made at original series construction. No one existing series, whether constructed by an official entity or private author, is of sufficient length to encompass the entire period for which data exist; therefore no such series alone can serve as the new series. Of necessity, the new CPI series is a composite of existing series, official and private. All the original series that the present author could find in the public domain are described and evaluated here. Other scholars have offered long-run series that are composites of these original series; all that the present author could find of such composite series are also reviewed, and the judgments of their authors considered in developing the new composite CPI series.