The first Kinsey report - "Male", 1948 was based on detailed interviews held with more than five thousand white males; the second report - "Female", 1953 - was based on data gathered in the same way for more than five thousand females. In the Male volume it is pointed out (p.6) that "about 12,000 persons have contributed history to this study" Furthermore, this represents forty times as much material as was included in the best of the previous studies. Kinsey estimated that no less than 100,000 histories would have been required to complete the project - hence the dedication in the Male volume. There are no signs that any such figure will ever be reached.